20 Sep 08 Making the Most of Digital Camera Memory Cards
Author: John Pawlett
Digital cameras are revolutionizing the world of home and professional photography, but they are married to memory cards just as traditional cameras are married to film. Making the best use of memory cards can have a very big impact on your enjoyment of digital photography. Choosing the right memory card for the job can be as important as choosing the right film for a traditional camera.
If you are new to digital cameras, the digital camera memory cards are the most important parts of any digital camera, without which they may not work at all. So if you are handling a digital camera or planning a purchase, you must know more about the memory cards used in these cameras.
Something many new digital camera owners find counter-intuitive is that bigger is not always better with a digital memory card. The actual response speed of your digital camera can depend greatly on the memory card it is using. The speed that your camera writes new pictures to the digital memory card is partially dependant on the transfer speed of the digital camera but is also dependant on factors in the memory card itself.
Memory cards that have buffers can take the data into a faster type of memory and then transfer the data from there to the slower flash memory which provides the main storage of almost all digital camera memory cards. Some digital camera provide their own buffer memory to allow you to take your next picture while the previous picture is being transferred to the memory card.
When you delete an image from the memory card of your digital camera, the flash memory is reconfigured because of special issues having to do with how this memory stores data. Normally this is an issue that you don’t have to worry about at all. However, if you have a very large memory card and delete an image, you may experience a several minute delay while house cleaning is performed on the memory card. Because of this, do not delete images while you are taking pictures.
Instead wait until you are at home, your hotel or in the car before reviewing your pictures and deleting the ones you don’t want. Smaller cards take less time for this house cleaning so many experienced digital camera owners will choose to have more than one medium sized memory card instead of one very large one.
Now the question arises-how many memory cards are enough for your camera? On an average basis, you must have at least two memory cards for your digital camera. That is, if you are using it in a normal and average fashion.
Most professional photographers choose to carry about four to six memory cards. This helps them shoot smoothly and constantly. If they run out of memory, they just take the loaded card out and insert the fresh one. Because memory cards can malfunction (just like traditional film canisters, but not as often), you should choose to have at least two memory cards at all times.
By having at least two cards, you can work with one and keep the other in reserve for emergency. Having at least one extra memory card for your digital camera will also ensure that you have the backup protection needed if you run out of space on your first card or in the possible event of the first card malfunctioning.
The next important issue is how to take proper care of these memory cards. The memory cards may seem like some small and fragile piece of technology, but they are actually fairly sturdy. The flash memory is encased in a stiff plastic shell which can withstand normal wear and handling. At one end of the memory card is either a set of little holes or copper strips. These are the sensitive part of the card. Any voltage source or a large jolt of static could corrupt the memory and probably cause permanent damage to the card. When the card is not in your camera, it is best to keep it stored in a protective case or in your camera case. Putting it in your pocket could cause a short (from your keys perhaps) or dirty the electrical contracts.
There have been instances where the users have misbehaved greatly with them and the memory cards have yet survived and continued to function correctly. But, this does not mean that one should not care for them.
When it is time to transfer your data from the memory card to your PC, it is best to have a memory card reader, or have a PC with a built-in reader. The data cables provided with most digital cameras are very slow compared to the speed of a direct reader and it is often easier to review, copy and delete images from a memory card when using a reader instead of through the data cable connection.
When traveling, X-Rays have never been shown to corrupt the data on, or damage, a digital camera memory card. The memory card is also not magnetic in nature so the motors in the X-Ray machine’s conveyor belt should not be able to cause any harm either.
Armed with knowledge comes the power to benefit from that knowledge. If you have learned something new about digital memory cards, hopefully you will benefit by enjoying your digital camera more and finding more opportunities to take great pictures.
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20 Sep 08 A Few Facts Of Digital Cameras
Author: Roberto Sedycias
A digital camera captures images in a digital format, unlike a conventional camera, which captures images using a photographic film.
History:
Using a mosaic photosensor, Eugene F. Lally of the Jet Propulsion Laboratory first showed how still photos could be produced in a digital domain. An engineer at Eastman Kodak, Steve Sasson, used solid-state CCD chips to build a prototype digital camera having a resolution of 0.01 megapixel, and recorded black and white digital images to a magnetic cassette tape. With this prototype model, Steve took the first image in December of 1975 taking 23 seconds to capture it.
In 1988, Fuji DS-1P became the first digital camera that captured images as a computerized file. However, the camera never entered the U.S. market. In 1991, Kodak DCS-100 was the first commercially available digital camera, which used a 1.3 megapixel sensor. With the advancement of technology, modern digital cameras have become multifunctional and are now capable of capturing audio/video and still photographs.
Benefits:
1 - You get superior image quality. Digital cameras can offer good to excellent image resolution.
2 - You get a fair price. A digital camera is reasonably priced and is affordable.
3 - You can transfer the pictures to your laptop. You can easily connect the digital camera to your laptop and transfer the pictures in your hard disk.
4 - You can print in large sizes. Due to its high resolution, pictures can be printed in large sizes by any plotter.
5 - You can email the pictures to your friends. You can send the pictures by email to your loved ones.
6 - You can store the images in CDs or hard disk. Once the pictures are transferred from digital camera to the computer, permanent storage on a CD or hard disk is possible.
7 - You can take the camera in your pocket while you travel. The small size of the digital camera makes traveling with it easy and a pleasure.
8 - You can move in close to your subject. Zoom lenses offer close-ups of your subject with sharp focus. You can take very good close-ups of flowers, bugs, stamps, coins, etc.
9 - You can rework the image in a computer. Any photo editing software can rework the images taken.
10 - You can take good pictures even in low-light situations. Due to flexible over sensitivity or ISO equivalents, digital cameras can easily take detailed pictures even in low-light conditions.
11 - You can take quality still photos of moving objects. Sports and fashion photography can be easily accomplished due to the fast burst rate of digital cameras.
12 - You save money. There is no need of buying photographic films, developing them into negatives and positives. Moreover, the batteries are usually rechargeable lithium-ion batteries, which last a long time.
13 - You can choose as per your needs and fancy. Many models are available like standard digital camera, underwater digital camera, waterproof digital camera, compact digital camera, and the professional digital camera.
Storage Media:
Digital cameras use memory to capture and store images. Some of the storages media used are onboard flash memory, 3.5″ floppy disks, video floppy disk, PCMCIA hard drives, CD or DVD, CompactFlash memory cards, Microdrives, Memory Stick, SD/MMC, MiniSD Card, MicroSD Card, XD-Picture Card, SmartMedia, and FP Memory.
Power:
Digital cameras consume a lot of power, which is supplied by powerful, small in size batteries. Batteries are broadly divided into two groups, namely, off-the-shelf and proprietary. Off-the-shelf batteries are like AA, CR2, CR-V3, AAA, and RCR-V3. They are lithium-ion (Li-Ion) or Nickel metal hydride (NiMH) batteries. Standard AA non-rechargeable alkaline batteries either do not work or work for only a very short time in most cameras.
Proprietary batteries are built as per the manufacturer`s custom specifications and are usually available as aftermarket replacement parts. Generally, lithium ion batteries are widely used as proprietary batteries for digital cameras.
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20 Sep 08 Digital Cameras in Todays Society
Author: Nigel
Digital cameras have become mainstream cameras because they are extremely easy to use and offer a host of wonderful features. Digital cameras connect to PC via USB so you can transfer your photos easily for archiving, editing, and printing. Digital cameras make it easy to share pictures both online and in print. Digital cameras with resolution in the four to five megapixel range are capable of producing professional-quality images.
Cameras
The major advantage of digital cameras is the ability to take multiple pictures at no extra cost and then printing only the best ones. Cameras meant for automatic point-and-shoot photos, with a 3x zoom lens, will serve casual shooters as well as dedicated hobbyists much of the time. Digital cameras with less than one megapixel are inexpensive, but they usually lack key features. Cameras with higher resolutionsof 7, 8, 10 or even more megapixels give you the latitude to create largerprints, or to crop and manipulate images with photo-editing software without degrading them. All digital cameras have a built-in computer, and all of them record images electronically. Since film still provides better picture quality, digitalcameras have not completely replaced conventional cameras. All the fun and interesting features of digital cameras come as a direct result of striving to improve customer needs for high quality, low cost photos.
Images are made up of tiny cells (also called pixels). Images taken at higher resolutions will look much clearer and sharper when printed, and large prints will look better. You can even select only the best and copy them from your computer back onto the camera’s storage device so you can give an edited slide show of just the best images. Once images are in digital form, you can start to take pieces from various images and paste them into other images. Digital photography now makes it possible to put all of your images on the Web and bore the entire world instead of just your friends and family. One nice thing about digital cameras is that you can show your images on a TV set.
Memory Most digital cameras support some type of removable memory card for storing your images. You should buy as large a memory card as your camera can accept, as the memory cards that are included with the cameras are usually not nearly big enough to hold a good number of high quality pictures. Two popular memory card types are CompactFlash and SmartMedia cards. Both types of memory are similar in price and performance but CompactFlash cards are more widely used. How many pictures will fit in the memory. The exact number depends on the size of the memory card (or other type of storage used), the camera’s resolution, the compression quality setting, the exact type of camera, and even the type of pictures taken. If you can’t fit enough pictures in the memory, you should buy a higher capacity memory card instead.
Digital cameras are distinguished by their resolution—how many pixels, or picture elements, the image sensor contains. Digital cameras give you extraordinary control over images. Digital cameras are perfect for learner photographers as the images can be displayed immediately. Digital cameras generally need a computer to manipulate and print images, but the technology is evolving rapidly, and photo printers that work without a computer are now mass-market items. Digital cameras have high power requirements, and over time have become increasingly smaller in size, which has resulted in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time. Digital cameras emerging popularity is attributed to the vastly improved photography experience they afford, through instant viewing, deletion, annotation, and control over reprint size and quantity.
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20 Sep 08 How to Find the Best Digital Camera
Author: Nicholas Tan
It seems that every month, if not every week, different manufacturers are coming up with the latest digital cameras to entice potential clients. And it’s just not working for us!
After spending sizeable amount of time at the mall figuring out which is the best digital camera for us, we finally have enough money to buy for that eye-popping, 7 mega pixel, 10x digital zoom, potable, candy colored, up to 512MB expandable memory of super hi-speed SD memory card and not to mention very portable, (that will be the envy of almost everyone we know). We march to the mall armed with our life savings and lotsa pride in ourselves, when we pass by a new display - an eight mega pixel, up to 1G expandable memory, with built it mic and stereo surround, video playback capable, with 22 scenic modes kind-of-camera. And we sigh because the producer of this amazing gadget claims that this is the best digital camera yet out in the market. And so as we always want to have the best, armed with our life savings and a few credit cards, we buy the “best digital camera.” But then again, that doesn’t last too long, after two months or so, there’s another “best digital camera.”
And so it confuses us. What makes a digital camera, the best digital camera?
Well, there are certain factors to consider when looking for the “best digital camera” for us.
MEGAPIXELS. One of the most important features of digital camera to make it into the best digital camera category is its mega pixel property. The higher the mega pixels the better the actual photograph will come out. A mega pixel is equivalent to one million pixels. The resolution of your image is based upon the mega pixel property of your camera. This means that as you enlarge the picture, you would get more detail and less blurry colors.
LCD SIZE. The best digital camera will always have a large LCD to help you frame your subject without having to squint to the viewfinder. This is also helpful when reviewing your images, some cameras enable touch up and editing features with its LCD. A 1.5-inch display is average, a 2-inch LCD display is good, but the best LCD size would be 2.5 inches or higher.
ZOOM. Most digital cameras have both digital and optical zoom. A higher optical zoom is always better than a higher digital zoom. Digital cameras are usually furnished with optical of between 3x to 10x. The better the optical zoom, the higher it climbs up to the best digital camera category.
MEMORY CARD. Always make sure that your memory card is the right one for your digital camera. There are different types of memory card like the xD, SD, Flash card and the likes. And these types of memory cards go with certain types of digital cameras. of course memory storage is also up there in choosing the best digital cameras. Choose the size of memory that you need, if you’re a photo junkie, you might need more than 32MB. Memory cards can go up to 1G.
The key point to find the best digital camera is to find one that will best fit you and your lifestyle. Don’t just buy the latest or the one that claims they are the best digital cameras out in the market. You wouldn’t want to buy a DSLR and use it with your home activities or family outing and have to lug it around?! Or you don’t want to buy the latest point and shoot camera when you’re serious about being a professional photographer. (Of course, you can use this for starters, but if you’re not a novice photographer anymore, you wouldn’t want to get this kind of camera.)
Actually, the best digital camera is the one that you will enjoy and use. Not the type that you’ll just leave rotting in its box or after a few weeks of usage or so, up there in the attic.
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19 Sep 08 Digital Camera Basic Information
Author: Roberto Sedycias
A digital camera is an electronic gadget that can capture photographs and then store them. Instead of employing photographic films like the traditional cameras or using magnetic tapes to record images in an analog format like in video cameras, a digital camera stores photographs in an electronic way in a digital format. Nowadays we also get modern and multifunctional compact digital cameras that can record and store sound and video apart from pictures.
Digital cameras have become a rage everywhere in the world. They are amongst the top items of must-have lists of every home. Not only much more technically advanced with better features than their older versions, digital cameras are also very handy and practical. They come in a wide range and variety to suit everyone`s tastes and budget.
Apart from having a better picture quality, the most obvious advantage of digital cameras over the conventional ones is that you can click and store as many pictures as you want without worrying about wasting the film roll. After you have transferred the pictures to your computer, you can easily keep those you want, discard others, print some and may even edit the not so flattering ones. This clearly gives you a lot of options and choices as you can change the background of photograph edit brightness and contrast and make other changes according to your whims.
Digital cameras can be of various types. The first in the category is the video camera which is mainly used to record moving images. Then you have digital still camera or live preview cameras. These cameras are usually of two types, compact and bridge. Compact digital camera has small zooms and is characterized by easy focusing and easy operation. They usually have a built in flash. Bridge digital cameras have super zoom lenses and are capable of taking good images.
Then we have digital single lens reflex cameras with a mirror and reflex system, digital rangefinders which is nothing but a camera that has a rangefinder and the professional modular digital camera system that is a very professional camera with different modular parts like grips, winders etc to suit different purposes. These types of cameras are usually used for commercial purposes in studios as they are quite big and bulky.
With a wide variety of digital cameras available in the market, it is obvious to get confused as to which will be the best-buy amongst them. However you need to understand that each camera has its unique function and specialty and you need to check out each one to determine your pick. As for example, if your purchased camera is going to be a gift then you need to know which type of digital camera will be suitable for the person. For instance, teens will obviously like cameras that are funky and cool, while mums will be delighted to get cameras that will allow easy image sharing for family pictures.
Before buying a digital camera it is important that you get your basic information right so that you can get the best deal. There are lots of factors that you need to consider like the resolution of the photograph and the size of camera. Another important consideration is the Digital Camera Storage or Memory Cards. Semi-professional photographers would also like to consider having a decent Digital Camera Zoom.
Last but not the least, after you get your brand new digital camera then learn about the basics of its maintenance and operation. Get acquainted with its various features; learn how to share your images with friends and family and steps to take to troubleshoot your camera.
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19 Sep 08 How to Find the Best Digital Camera
Author: Shirley Margriet
It seems that every month, if not every week, different manufacturers are coming up with the latest digital cameras to entice potential clients. And it’s just not working for us!
After spending sizeable amount of time at the mall figuring out which is the best digital camera for us, we finally have enough money to buy for that eye-popping, 7 mega pixel, 10x digital zoom, potable, candy colored, up to 512MB expandable memory of super hi-speed SD memory card and not to mention very portable, (that will be the envy of almost everyone we know). We march to the mall armed with our life savings and lotsa pride in ourselves, when we pass by a new display - an eight mega pixel, up to 1G expandable memory, with built it mic and stereo surround, video playback capable, with 22 scenic modes kind-of-camera. And we sigh because the producer of this amazing gadget claims that this is the best digital camera yet out in the market. And so as we always want to have the best, armed with our life savings and a few credit cards, we buy the “best digital camera.” But then again, that doesn’t last too long, after two months or so, there’s another “best digital camera.”
And so it confuses us. What makes a digital camera, the best digital camera?
Well, there are certain factors to consider when looking for the “best digital camera” for us.
MEGAPIXELS. One of the most important features of digital camera to make it into the best digital camera category is its mega pixel property. The higher the mega pixels the better the actual photograph will come out. A mega pixel is equivalent to one million pixels. The resolution of your image is based upon the mega pixel property of your camera. This means that as you enlarge the picture, you would get more detail and less blurry colors.
LCD SIZE. The best digital camera will always have a large LCD to help you frame your subject without having to squint to the viewfinder. This is also helpful when reviewing your images, some cameras enable touch up and editing features with its LCD. A 1.5-inch display is average, a 2-inch LCD display is good, but the best LCD size would be 2.5 inches or higher.
ZOOM. Most digital cameras have both digital and optical zoom. A higher optical zoom is always better than a higher digital zoom. Digital cameras are usually furnished with optical of between 3x to 10x. The better the optical zoom, the higher it climbs up to the best digital camera category.
MEMORY CARD. Always make sure that your memory card is the right one for your digital camera. There are different types of memory card like the xD, SD, Flash card and the likes. And these types of memory cards go with certain types of digital cameras. of course memory storage is also up there in choosing the best digital cameras. Choose the size of memory that you need, if you’re a photo junkie, you might need more than 32MB. Memory cards can go up to 1G.
The key point to find the best digital camera is to find one that will best fit you and your lifestyle. Don’t just buy the latest or the one that claims they are the best digital cameras out in the market. You wouldn’t want to buy a DSLR and use it with your home activities or family outing and have to lug it around?! Or you don’t want to buy the latest point and shoot camera when you’re serious about being a professional photographer. (Of course, you can use this for starters, but if you’re not a novice photographer anymore, you wouldn’t want to get this kind of camera.)
Actually, the best digital camera is the one that you will enjoy and use. Not the type that you’ll just leave rotting in its box or after a few weeks of usage or so, up there in the attic.
Related posts
Tags: best digital camera, best digital cameras, digital cam, Digital Camera, Digital cameras, digital zoom, dSLR, expandable memory, flash, gadget, images, lcd display, mega pixel, mega pixels, megapix, megapixel, megapixels, memory, memory card, memory cards, memory storage, optical zoom, photo, photograph, photographer, picture, pixel, point and shoot camera, professional photographer, resolution, sd memory card, storage, viewfinder, which is the best digital camera, zoom
19 Sep 08 Consumer Reports - Digital Cameras
Digital cameras, which employ reusable memory cards instead of film, give you far more creative control than film cameras can. With a digital camera, you can transfer shots to your computer, then crop, adjust color and contrast, and add textures and other special effects. Final results can be made into cards or T-shirts, or sent via e-mail, all using the software that usually comes with the camera. You can make prints on a color inkjet printer, or by dropping off the memory card at one of a growing number of photofinishers. You can upload the file to a photo-sharing Web site for storage, viewing, and sharing with others.
Like camcorders, digital cameras have LCD viewers. Some camcorders can be used to take still pictures, but a typical camcorder’s resolution is no match for a good still camera’s.
WHAT’S AVAILABLE
The leading brands are Canon, Fujifilm, HP, Kodak, Olympus, and Sony; other brands come from consumer-electronics, computer, and traditional camera and film companies.
Digital cameras are categorized by how many pixels, or picture elements, the image sensor contains. One megapixel equals 1 million picture elements. A 3-megapixel camera can make excellent 8×10s and pleasing 11×14s. There are also 4- to 8-megapixel models, including point-and-shoot ones; these are well suited for making larger prints or for maintaining sharpness if you want to use only a portion of the original image. Professional Digital cameras use as many as 14 megapixels.
Price range: $200 to $400 for 3 megapixels; $250 to $400 for 4 and 5 megapixels; $300 to $1,000 for 6 to 8 megapixels.
IMPORTANT FEATURES
Most Digital cameras are highly automated, with features such as automatic exposure control (which manages the shutter speed, aperture, or both according to available light) and autofocus.
Instead of film, digital cameras typically record their shots onto flash-memory cards. CompactFlash and SecureDigital (SD) are the most widely used. Once quite expensive, such cards have tumbled in price–a 128-megabyte card can now cost less than $50. Other types of memory cards used by cameras include Memory Stick, Smart Media and xD-picture card. A few cameras, mainly some Sony models, use 3 1/4-inch CD-R or CD-RW discs.
To save images, you transfer them to a computer, typically by connecting the camera to the computer’s USB or FireWire port or inserting the memory card into a special reader. Some printers can take memory cards and make prints without putting the images on a computer first. Image-handling software, such as Adobe Photoshop Elements, Jasc Paint Shop, Microsoft Picture It, and ACDSee, lets you size, touch up, and crop digital images using your computer. Most digital cameras work with both Windows and Macintosh machines.
The file format commonly used for photos is JPEG, which is a compressed format. Some cameras can save photos in uncompressed TIFF format, but this setting yields enormous files. Other high-end cameras have a RAW file format, which yields the image data with no processing from the camera.
Digital cameras typically have both an optical viewfinder and a small color LCD viewer. LCD viewers are very accurate in framing the actual image you get–better than most of the optical viewfinders–but they use more battery power and may be hard to see in bright sunlight. You can also view shots you’ve already taken on the LCD viewer. Many digital cameras provide a video output, so you can view your pictures on a TV set.
Certain cameras let you record an audio clip with a picture. But these clips use additional storage space. Some allow you to record limited video, but the frame rate is slow and the resolution poor.
A zoom lens provides flexibility in framing shots and closes the distance between you and your subject–ideal if you want to quickly switch to a close shot. The typical 3x zoom on mainstream cameras goes from a moderately wide-angle view (35mm) to moderate telephoto (105mm). You can find cameras with extended zoom ranges between 8x and 12x, giving added versatility for outdoor photography. Other new cameras go down to 24 or 28 mm at the wide-angle end, making it easier to take in an entire scene in close quarters, such as a crowded party.
Optical zooms are superior to digital zooms, which magnify the center of the frame without actually increasing picture detail, resulting in a somewhat coarser view.
Sensors in digital cameras are typically about as light-sensitive as ISO 100 film, though some let you increase that setting. (At ISO 100, you’ll likely need to use a flash indoors and in low outdoor light.) A camera’s flash range tells you how far from the camera the flash will provide proper exposure: If the subject is out of range, you’ll know to close the distance. But digital cameras can tolerate some underexposure before the image suffers noticeably.
Red-eye reduction shines a light toward your subject just before the main flash. (A camera whose flash unit is farther from the lens reduces the risk of red eye. Computer editing of the image may also correct red eye.) With automatic flash mode, the camera fires the flash whenever the light entering the camera registers as insufficient. A few new cameras have built-in red-eye correction capability.
Some cameras that have powerful telephoto lenses now come with image stabilizers. These compensate for camera shake, letting you use a slower shutter speed than you otherwise could for following movement. But an image stabilizer won’t compensate for the motion of subjects.
Most new 6- to 8-megapixel cameras come with full manual controls, including independent controls for shutter and aperture. That gives serious shutterbugs control over depth of field, shooting action, or shooting scene with tricky lighting.
HOW TO CHOOSE
The first step is to determine how you will use the camera most of the time. Consider these two questions:
How much flexibility to enlarge images do you need? If you mainly want to make 4×6 snapshots, a camera with a 3- or 4-megapixel resolution will be fine. Such a camera will also make an 8×10 print of an entire image without alteration that looks as sharp as one from a 6- or 8-megapixel model. But to enlarge the image more or enlarge only part of it, you’ll want a 6- to 8-megapixel camera.
How much control do you want over exposure and composition? Cameras meant for automatic point-and-shoot photos, with a 3x-zoom lens, will serve snap shooters as well as dedicate hobbyists much of the time. The full-featured cameras in the 6- to 8-megapixel range offer capabilities that more-dedicated photographers will want to have. Two of the more important capabilities are a zoom range of 5x to 10x or more, which lets you bring distant outdoor subjects close and also lets you shoot candid portraits without getting right in your subject’s face, and a full complement of manual controls that you determine the shutter speed and lens opening. ‘
Once you’ve established the performance priorities that you need from a camera, you can narrow your choices further by considering these convenience factors:
Size and weight. The smallest, lightest models aren’t necessarily inexpensive 3-megapixel cameras. And the biggest and heaviest aren’t necessarily found at the high end. If possible, try cameras at the store before you buy. That way, you’ll know which one fits you hand best and which can be securely gripped. In our tests, we have found that some of the smallest don’t leave much room even for small fingers.
Battery type and life. All digital cameras can run on rechargeable batteries of one of two types: an expensive battery pack or a set of AA batteries. In our tests of the cameras, neither battery type had a clear performance advantage. The best-performing cameras offer upward of 300 shots on a charge, while the worst manage only about 50. We think it’s more convenient to own a camera that accepts AA batteries. You can buy economical, rechargeable cells (plus a charger) and drop in a set of disposable lithium or alkaline batteries if the rechargeable run down in the middle of the day’s shooting.
Camera speed. With point-and-shoot cameras like the ones we tested, you must wait after each shot as the camera processes the image. Most models let you shoot an image every few seconds, but a few make you wait 5 seconds or more. They may frustrate you when you’re taking photos in sequence.
Your other cameras. If you’re adding a camera to your lineup or trading up to a more versatile model, look first for one that’s compatible with the other cameras. If it is, you can share memory cards and batteries. Designs within a camera brand line are often similar. So staying wit the brand you have lowers the learning curve on the new camera for family members who switch between cameras.
Copyright © 2002-2006 Consumers Union of U.S., Inc.
For the latest information on this and many other products and services, visit www.ConsumerReports.org.
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19 Sep 08 Things you Need to Know Before you Buy Digital Camera
Author: Nicholas Tan
Digital cameras come in many sizes, colors, brands, zooms, resolutions, playbacks, etc. There are so many features and qualities that are being placed in the devices that buyers especially first timers become overwhelmed and dizzy with these outstanding arrays of gadgets. This is even without including the various advertisements and different ratings that are used to promote these products.
So what are the things to look for if you want to buy digital camera? To be able to answer these, there are 2 sets of information you have to know before you can decide. The first type of information is defining what YOU need and want in a digital camera. To do this, you can ask yourself the following questions:
- What do you want to take with your digital camera? Before you buy digital camera, it is important to determine what kind of pictures you want to take with it. If you are a digital photography enthusiast, any digital camera will not just do. You have to look for features that can support the zooming you need, the resolution, etc.
- How much is your budget? This is a very important question any person who intends to buy digital camera should ask. Because no matter what your needs and wants are for the device, your financial resource will play a huge part in dictating the type of digital camera you will buy.
- What are you resources? When you buy digital camera, sometimes the spending does not end there. You also have to consider the capacity and the power of the computer and the printer you will be hooking your camera with for your editing and printing needs. Editing software are already included when you buy digital camera but other devices aren’t. Aside from a printer, ink and paper for printing, you might also need additional memory cards for your camera and a more powerful computer to support image editing and image storage and retrieval.
After answering these 3 questions, the second set of information you need to know before you buy digital camera are the features that you need in the device. These are:
- Resolution. Before you buy digital camera, check first its capacity to produce high quality photo images. The number of pixels indicated determines resolution. The more number of pixels, the higher the resolution which can make photos to be enlarged without losing image quality.
- Built-in memory. Digital cameras need memory cards for picture storage. When you buy digital camera, make sure that the gadget that you buy does not only have a “built-in” memory but should also have a card slot for external and additional memory. This allows you to change full memory cards conveniently while shooting your pictures.
- Look and feel. It is essential for you to feel comfortable holding your digital camera while shooting. So, before you buy digital camera, it good to test and check if you are comfortable holding it and using it. Consider where the buttons are located and how they are spaced out and see also if you feel comfortable using the viewfinder.
- Battery life. Digital cameras use up batteries fast and batteries are expensive. Before you buy digital camera, consider if the camera’s batteries are rechargeable. This way you can recharge them. Take also into consideration an AC adapter when you buy digital camera. You can attach this to the camera when you are viewing your pictures or uploading them
- LCD. The LCD is a special consideration you have to look into when you buy a digital camera. This is a small screen located at the back of a digital camera that allows you to preview the pictures you took. This has to be considered when you buy digital camera because it uses up a lot of battery power.
- Special features. Special features that will suit your needs should be thought about, too before you buy digital camera. If you want your camera to have good zooming, you can opt for those with optical zoom lenses. A diopter adjustment on the digital camera’s viewfinder will also be beneficial to those who regularly wear glasses and wish to buy digital camera. Other features such as remote control, tripods, etc. can also be considered when you buy a digital camera.
With these information, you can now figure out what you really need and want before you buy digital camera. If you want to see ratings and rankings of these devices based on price, resolution or other features, check out various websites that have these in the Internet.
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19 Sep 08 Why Buy Digital Cameras?
Author: Roberto Sedycias
Technology development started at a very high pace during the 20th Century. Like many other areas of development, photography also saw major developments in its field. Photographic camera technology has seen a constant improvement from way back in 1913 when a 35 mm still camera was produced till 1985 when digital technology was first introduced in photography by Pixar.
Basically digital camera is an electronic gadget which captures and stores photographs in a digital format without using any processing films. The first true digital camera was launched in 1988 by Fuji Company .This camera used a memory card for storage purposes. The latest models of Digital Cameras are also able to record sound and video. These digital cameras store pictures on a small device called CCD (Charge Coupled Device). From Digital cameras the images can be transferred to computer and the images can be edited with the help of software like Adobe Photoshop.
Advantages of digital cameras
Convenience of use: The foremost advantage of using the digital camera is that you don`t need to worry about buying films and changing the rolls. You can click as many pictures you want, transfer them to computer, have a close look at them and get only the good ones printed after editing them thoroughly.
Edit options: The Digital cameras allow you to edit the photographs in the easiest way with the help of software. The color, brightness and contrast of the photo can be adjusted and the image can be cropped and resized as required. This helps to optimize the resolution of the photographs.
Economical: Digital cameras are economical in the sense that they do away with the cost of films and the cost of processing. When pictures are taken in bulk quantity the cost of films saved works out to a considerable amount.
Flexibility: You can view the photo you have just clicked on the LCD display of the Digital Camera and if you don`t like it you can retake the same.
Disadvantages of digital cameras
Quality of output: For professional reproduction purposes the conventional film camera is still the best as digital cameras cannot match them in resolution and depth quality.
Initial Cost: The initial investment cost for digital camera is higher than the photo film camera. The cost of the camera for home use runs from around US$ 150 to $1000 whereas the professional models cost may go as high as US$20000.
Slower Speed: Digital cameras take some time for storing the images which is unsuitable for action photography in which you need very fast clicks.
Important features
The digital camera quality largely depends upon its optic features, color depth, resolution etc. While shopping for a digital camera one should take care of following.
High Resolution: Resolution of a digital camera depends upon its capacity to store the dots or pixels. The more pixels it can store the higher will be the resolution. Cameras with a capacity of 5 mega pixels or more are ideal for home photography while professional photographers may look for a capacity of more than 7 mega pixels.
Capacity: The capacity of the digital camera to store pictures is also very important. The cameras have a built in memory capacity and additional memory card slot to store pictures. The cost of the memory cards is high but nevertheless they are very important to serve the purposes of storage.
Bit Depth: This relates to the color capability or the capacity of a digital camera to reproduce colors. Good cameras are capable of handling 24 bit color which fulfills the range of the human eye.
Optics and zoom features: A good camera must have optical zoom lenses with automatic flashes in order to produce better images.
Display: A good LCD display is important for a digital camera as it allows the user to flip through the images he has taken.
The digital camera is certainly becoming more and more popular in the modern era and is set to replace the conventional ones for all general purposes.
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18 Sep 08 Buying a Digital Camera? Read This Buying Guide!
Author: Bob Shanty
Many digital cameras with upgraded technology are being introduced every day. This makes it more difficult to select a camera, as you are left with a wide range of models to choose from. However, most buyers have specific features and needs in mind. Rather than going for the latest model, buy digital cameras that best suit your requirements.
What should I look for when buying a digital camera?
The cheap camera lenses, resolution, display size, performance and battery life should all play a significant role in your buying decision. Here are some features to keep in mind while picking the right camera for yourself.
Resolution is typically defined as the number of pixels that make up a picture. A digital cameras resolution is closely related to image quality. You need a high resolution camera to shoot and print highly detailed photographs. If you want to enlarge and crop any of your photos without loss of clarity, go for cameras that offer a higher resolution. If you do not intend on printing your photographs and would rather email them to friends, a lower resolution camera would be a better choice. They are more affordable and still produce fairly good images.
Memory and Connectivity:
Generally, digital cameras have a removable storage option, such as a memory card slot. Digital cameras support a wide range of formats like flash memory, memory sticks, SecureDigital cards, SmartMedia cards and xD Picture cards. Many TVs, laptops, digital photo frames and some gaming consoles have memory card readers, so you can easily view photos that are stored on memory cards. If you want to save money, store photos on the cameras internal memory rather than on a memory card and transfer them to a PC or Mac using a USB cable. Digital memory is a huge time and money saver!
Rechargeable batteries are highly recommended because they can be charged and reused again. Recent cameras are compatible with NiCad, NiMH and lithium-ion batteries. Though NiCad and NiMH are inexpensive, lithium-ion is worth the extra money. They are long-lasting batteries with low self-discharge rates. You should opt for cameras that are compatible with lithium-ion batteries. A few cameras come with an AC power adapter that can be used to charge the digital camera battery as well.
Zoom:
Digital cameras come with two types of zoom lenses, optical and digital. Both of these zoom lenses allow you to take close-ups of a distant subject, although they accomplish this task through different means. The optical zoom magnifies the image before the shot is taken, whereas the digital zoom artificially magnifies the image by enlarging the pixel area but this leads to a loss of resolution. You should pay more attention to the optical zoom rather than the digital zoom when comparing models.
Modes:
Most cameras available today have preset modes for shooting images under different conditions. Factors such as exposure, aperture, focussing, light metering, white balance and sensitivity can all be adjusted. Many digital cameras also include video capture modes, enabling you to take short videos at different frame rate speeds.
ViewFinders and LCD Displays:
The optical viewfinder is the window you look through when taking a picutre. Although there are digital cameras with viewfinders, several of the latest models have only an LCD display. The LCD screen lets you view an image as you take it and also plays back pictures and videos saved on your camera. Anti-glare screens are best for buyers who plan on shooting a lot of photos outdoors. If you need a durable camera for rough use, opt for a scratch resistant screen.
Technology:
Digital cameras also come with innovative technologies that make photography fun and easy. Do u want to avoid overexposed or darkened faces, recognise multiple faces or optimize the color and tonal qualities of your photos? Not a problem. Todays cameras are well equipped with automatic red-eye and camera shake detection and correction as well as multiple face recognition. Not no meantion tons of
What are the different types of cameras and camera accessories online or available through conventional stores?
Point-and-Shoot Models:
Point-and-shoot cameras are a dime a dozen. These entry level models provide low resolution with little magnification. If you do not want to spend time on focusing and figuring out the settings and controls, a point-and-shoot camera is just the ticket. You will find plenty of these models that are low in cost and easy to use.
Intermediate Models:
These models are especially designed for beginners. Equipped with a range of automatic settings, these consumer-level digital cameras produce flawless pictures. They usually have a resolution of 3.2 to 5 megapixels and a 3:1 to 4:1 zoom lens.
Advanced Consumer Models:
If you have taken a class or photography is one of your hobbies, then you will probably want some additional features. Choose from the many advanced consumer models with higher resolutions, quality lenses and morer zoom. These models let you add features based on your needs and give you the freedom to personalize the settings.
Prosumer Models:
When you buy digital cameras, if consumer models are too basic for you and professional models are too complex, you will love a prosumer model. These sophisticated cameras have the best of both worlds. They have a vast number of options to work with, like switching between automatic and manual focus, selecting the shutter speed and adjusting the aperture settings. You will also have the opportunity to express your creative side by manipulating images. You can adjust the brightness and contrast levels for truly unique snaps. You can expect a minimum of 5 to 6 megapixels in this category. These digital cameras can take 2 to 3 pictures per second, but tend to be more fragile than other models.
Professional Models:
You will need a top of the line model that sports the latest features to meet your high demands, if you are a professional photographer. Professional models are capable of producing high resolution images with magnificent colors and clarity. They have interchangeable lenses and a resolution of up to 14 megapixels. These models are the fastest on the market, allowing you to take 5 pictures per second. Professional digital cameras have a whopping storage option of at least a 1 GB mini hard disk drive, on an average.
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