21 Sep 08 Find a Nice Digital Camera
Author: Komang Setiabudi
Where are you going today? Are you going alone or together with your friends or family? Don’t forget to bring your camera. Don’t leave home without your camera. A lot of unique thing happen in the street. You can capture anything with your camera.
What is your camera? Do you still have your grandfather’s camera? Many people still use SLR (single lens reflection) cameras. A SLR camera is great because you can create photography art. A professional photographer will use both digital and analog camera.
If you go to the city and enter the camera shops, there are not many conventional cameras available now. Most people are preferred to use a compact digital camera. A digital camera is slim, full with features and easy to use. You don’t have to bring a big size camera and film wherever you want to take some pictures.
When you need to buy a digital camera you must think about the price, brand, features, picture quality, mega pixel, services and guarantee, etc. You can choose many brands such as Kodak, Canon, Pentax, Panasonic Lumix, Leica, Casio, Nikon, Sanyo, Samsung, Sony, and other brand. A digital camera starts from 1.3 mega pixels and above 10 mega pixels. You can get a good quality picture from 4 or more mega pixel resolutions. Don’t buy a digital camera below the 4 mega pixels because the picture quality is not so good when you print your photo. Recently, Canon PowerShot, Casio Exilim, Sony Cyber-shot, Panasonic Lumix and other Chinese brand Mikona camera promote 12.1 Megapixel digital cameras. Wow…
The latest digital camera also equipped with face detection technology, high sensitive ISO, anti shake, anti blur, auto focus, internal editing, and other high tech features. Also you can connect your digital camera to view full HDTV 1080p for better images. You don’t have to buy a separate video camera if you are a traveler because a compact size digital camera also equipped with a capability to make a movie. It’s incredible.
Before you make a decision please consider the feature of the camera. Don’t forget to check the brochure and browse the information in the Internet. Make sure that the lenses size, zoom, and flash light, battery life, etc. fits your needs. Ask the shop owner about bonus if you choose a particular brand. Sometime they give some bonuses such as external memory or soft case. Most digital camera also include video capture capability, but make sure that you can make a video or movie with sound or audio. Video without audio is not complete. It’s a great idea if you purchase a digital camera in a promotion season. Digital cameras are now available for both professional photographers and amateur enthusiasts. A professional digital camera is expensive and the size it’s bigger than the compact size digital camera.
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21 Sep 08 About Digital Cameras
Author: Mohit Sharma
The digital cameras have the ability to display the images on the screen immediately after the image is recorded. The images to be captured can be seen on its screen instead of its viewfinder. This way you can get a clearer preview of the image you are intending to capture.
The digital camera outdoes the traditional film camera in its image storing capacity too. The digital camera has the ability to store thousands of images on a single memory device. In addition you can even erase or unload the captured images onto your computer and reuse the camera’s inbuilt memory. In some cases you can even put a new memory card and store more pictures. Digital cameras also allow you to edit images. When capturing videos, digital cameras have the ability to record sound too, thus making video capturing a fun experience.
There are varied categories of digital cameras:
Video cameras: They are the cameras that exclusively record moving images.
The professional video cameras are the ones used for film production, etc. these have multiple image sensors thus enhancing the resolution of the end product. These do not have a inbuilt VCR or microphone.
The camcorder is another type of digital camera that has a microphone to record sound and an LCD screen to view the image that you are going to capture. This is mostly used by amateurs.
The web cameras are the type that is attached to the computers. Some of these web cameras have microphones, while some of them also include zoom abilities.
Compact digital cameras: They are small and portable; the smallest of them are called subcompacts. They are easy to use with not many special features or high picture quality. They have built in flash of not a very high power, but sufficient for close objects. It also permits live preview. They have a greater depth of field thus allowing objects from larger distances to come in sharp focus.
Bridge cameras: They are higher-end digital cameras that look a lot like Digital SLRs. Bridge cameras have the same advanced features as SLR and the live preview like the compact digital cameras.
Digital single lens reflex cameras: This is the digital camera that works like the single-lens reflex with a film.
Digital rangefinders: A rangefinder is an optical mechanism used to measure subject distance. They were once widely used on film cameras.
Professional modular digital camera systems: Mostly these cameras are used in studios for commercial production. Since they are bulky and difficult to carry they are rarely used in action or nature photography. They can be changed to digital or film cameras by simply replacing the back part of the entire device.
Line-scan camera systems: This type of camera is used in industrial areas in order to capture an image of a constant stream of moving material. This technology has the ability
These cameras are almost solely used in industrial settings to capture an image of a constant stream of moving material. Line-scan technology is capable of capturing data extremely fast, and at very high image resolutions.
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21 Sep 08 Digital Camera - the Easy Way to Take Pictures
Author: Roberto Sedycias
In comparison to film cameras, digital cameras have number of advantages which includes displaying the image on the camera screen right after recording, a single small memory device can record thousands of images, records video with sound, provision to edit images, and above all storage capacity can be re-used by deleting the images. There are numbers of devices available that has in-built digital cameras like mobile phones, PDA`s etc. Specialized digital cameras are fit into astronomical devices like The Hubble Space Telescope.
Digitizing images on scanner and digitizing video signals are much older than making of still images using digital signals from an array of discrete sensor elements. It was then used for astronauts to provide onboard navigation information during their visit to planets. It provided the still photos of stars and planet locations during transit and also additional stadiametric information for orbiting or landing guidance while approaching planet.
Steven Sasson, an engineer at Eastman Kodak, attempted to develop first digital camera with solid state CCD image sensor chips. But it was just a technical exercise. The true digital camera was Fuji DS-1P developed in 1988. And the first commercialized camera was Dycam Model 1 in 1990. Then in 1991, Kodak launched its Kodak DCS 100. Else Casio QV-10 was the first consumer camera in 1995. Nikon D1, a 2.74 megapixel camera was the first digital SLR developed in 1999. And in 2003, Canon 300D, first 600 megapixel camera was launched.
There are various types of digital cameras available. For videos, there are professional video cameras which are used in television and movie production. Camcorders come with inbuilt microphone and a small liquid crystal display to watch video while recording and playback. One can get still photographs also with them. Webcams, attached to computers, can capture full-motion video and are also available with microphones or zooming ability.
In live-preview digital camera, there is an electronic camera that can be used to frame and preview before taking the photograph and also to review stored photographs. Many of such cameras can take motion pictures. Then the recorded images can be transferred to computer, printer or any other such device. USB mass storage device enables the camera to function as disk drive for computer and Picture Transfer Protocol is then used.
To use Firewire, storage device is removed from camera and inserted into other device. Compact digital cameras, small and portable with inbuilt flash, are easy to use, and images are stored using Lossy compression. They might be able to capture motion picture but that to a limit. Bridge or SLR like camera is higher-end-live-preview camera with more advanced features like superzoom lenses, takes movies with sound, etc. Digital rangefinder, a user operated mechanism, is capable to measure subject distance.
Apart from above mentioned digital cameras, there are other categories also. Professional modular digital camera systems are used in studios for commercial production. Line-scan camera systems, based on focusing mechanism, are used in industrial settings to capture images of constantly moving materials. They capture images at extremely fast with high image resolutions.
Most of the digital cameras come with pre-set modes for different applications. Data can be transferred through USB port, Firewire port, USB PTP mode and even through wireless connections like WiFi, Bluetooth etc. These data are mostly stored in Microdrives, Joint Photography Experts Group (JPEG), Tagged Image File Format (TIFF) and RAW. Formats for movies are AVI, DV, MPEG and MOV. Recently MP4 format is also developed. Digital cameras have small but powerful batteries to operate for enough length of time.
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20 Sep 08 Digital Camera Handling And Maintenance
Author: Roberto Sedycias
A photographic camera is an apparatus for taking photographs or moving film. All cameras have the same basic design - a lightproof container with a lens and a light-sensitive surface. A digital camera is different from a standard 35 mm SLR (single lens reflex) in the sense that digital cameras require no film rolls.
In earlier times careful planning went into taking pictures of an object but with a digital camera you can take a number of photographs and then select the best posture that you have captured while the rest of the pictures can always be deleted without involving any monetary loss. The pictures can then be transferred to your personal computer from where you can take out printouts if you have a color printer installed.
The quality of the photographs in a digital camera depends upon the camera resolution which is determined by pixels. Pixels or picture elements are any of the minute areas of uniform illumination of which an image on a digital display screen is composed. The greater the number of these pixels, the sharper is the image created. A digital camera which offers a resolution of 5 mega pixels is normally considered a good camera.
The weight of the digital camera also goes a long way in camera selection. Once upon a time digital cameras used to weigh one kilogram but with technological advancement they have become very compact and sleek. These modern cameras now come with zoom facilities. You can use digital zoom in any picture-taking mode to get up to 3X magnification beyond optical zoom.
You can do more with your digital camera like using different modes. General picture taking offers an excellent balance of image quality and ease of use. Point-and-shoot simplicity function is provided when taking pictures under special conditions. You can capture video with sound. You can view your favorite pictures. To capture far away scenes, the camera uses infinity auto focus. The camera automatically sets the focus distance depending on the zoom position.
Most digital cameras permit a white-balance setting which automatically transmits by inference which element should look white and which should look black. The lens is an integral part of any camera and determines the quality of the photographs. All digital cameras have LCD screens which can vary in size.
Care and maintenance of your digital camera is of utmost importance. If you suspect water has gotten inside the camera, remove the battery and memory card and allow all components to air-dry for at least 24 hours before using the camera. Blow lightly on the lens or LCD to get rid of dirt and dust. You should always wipe softly with a lint-free and soft cloth or lens cleaning tissue. Never use solutions unless intended particularly for camera lenses. Never allow chemicals such as sun tan lotion, to contact painted surfaces.
For digital camera, battery care is vital. Do not allow batteries to touch metal objects, including coins. Otherwise a battery may short circuit, discharge energy, become hot or leak. Always remove the battery when the product is stored for an extended period of time.
If your budget allows always buy a digital camera that provides you with higher resolutions, longer zoom lens and some other special features. Advanced consumer cameras usually require that you spend some time with the instruction manual to master all their capabilities, but they have few limitations.
Digital camera assures a user friendly working with pictures and videos. If accidentally you delete a picture you can use the undo delete function to retrieve it but this should be done immediately after you delete a single picture.
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20 Sep 08 Types and Models of Polaroid Digital Cameras
Author: Russ Snapper
The type of camera with self-developing film is known as instant camera. Polaroid Corporation makes the famous Polaroid cameras.
Based on the type of film used, Polaroid cameras can be classified. The older Polaroids used instant film roll. Roll films were of two types: Positive or developing agent and negative. These rolls were available in three sizes. Pack film was later used in cameras, in which the photographer has to pull the film from the camera for developing and subsequently the positive and the negative have to be peeled separately while developing. This Pack film was available initially in a rectangular format and later in square format. Subsequent Polaroids such as the once famous SX-70 model utilized a square format integral film, which had the developer, negative, fixer etc in the same film. Development of each exposure was automatic once the shot is taken.
That’s the history of Polaroid camera. Polaroid digital cameras are now available in various types. You should be happy to know that there are certain models designed specially for a good cause. The m635P model from Polaroid Corporation was designed solely for promotion of breast cancer research. Polaroid Corporation along with actress Elizabeth Hurley initiated to offer a combined donation of $60,000 for the above Research foundation in the year 2006. Pink, light pink and magenta models of Polaroid digital cameras were launched especially for the above good cause and awareness.
One more noted achievement from Polaroid is the launch of the ION digital camera which combines high-end features and is easy to use. This ION digital camera has an on-board memory of 8MB and is light and compact, suitable for traveling people. Other features of this ION digital camera include automatic white balance with auto exposure, a 10-second electronic timer, the capacity to capture AVI video clips along with audio like a web cam, 640 x 460 pixel resolution, Arc Soft software on DVD, two AAA batteries and a USB cable.
Another great model from Polaroid is PDC 4355, which has glass lenses of high quality for Zoom and normal, 4.2 MP resolutions, 3x Optical Zoom and a fast CCD sensor. This is a good camera for photographers for point and shoot simplicity coupled with great optical performance. In the 3x optical and 4x digital zoom modes, the glass lens system permits for exposures for distances of 15 centimeters to infinity and has three modes for image quality and video clip functions.
This Polaroid digital camera has other features such as macro mode, auto focus, Inbuilt flash having the on, off and red eye and auto modes. The PDC 4355 model has an Inbuilt flash memory of 16 MB to store your video clips and pictures, later expandable up to 256MB with any available Secure Digital card. This camera also supports Print Image Matching feature that has the ability to have the camera and mode settings along with the images recorded.
You can easily upload the images to your computer through an USB cable by using the software ‘Photo Impression 5.0’. This software can launch your desktop automatically, detect any new photos in the camera and permit you to transfer them to your computer at the click of the OK button. This handy camera allows you to take pictures within a few minutes of receiving and is powered by two AA batteries.
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20 Sep 08 The Magic Behind Digital Camera
Author: Harry Rockwell
A digital camera, as opposed to a film or videotape camera, uses an electronic sensor to transform images (or video) into electronic data. Modern digital cameras are typically multifunctional and the same device can take photographs, video, and/or sound.
In 2005, digital cameras are starting to push traditional film cameras out of many markets. Shrinking device sizes have recently allowed miniaturized digital cameras to be included in multifunctional devices, such as cell phones and PDAs.
Classification
Digital cameras can be classified into several groups:
* Professional video cameras such as those used in television and movie production. These typically have multiple images sensors (one per color) to enhance resolution and color gamut. Professional video cameras usually do not have a built-in VCR or microphone.
* Camcorders used by amateurs. These are a combination of camera and VCR to create an all-in-one production unit. They generally include a microphone to record sound, and feature a small LCD to watch the video during filming and playback.
Still cameras
Digital still cameras are generally characterized by the use of flash memory and USB or Fire Wire for storage and transfer.
Most have a rear LCD for reviewing photographs. They are rated in mega pixels; that is, the product of their maximum resolution dimensions. The actual transfers to a host computer are commonly carried out using the USB mass storage device class (so that the camera appear as a drive) or using the Picture Transfer Protocol and its derivatives.
All use a CCD (for Charged Coupled Device) which is a chip comprised of a grid of phototransistors to sense the light intensities across the plane of focus of the camera lens.
There has recently been some application of a second kind of chip, called a CMOS (Complementary Metal-Oxide Semiconductor) sensor, and this chip is often differentiated from a CCD proper in that it uses less power and a different kind of light sensing material, however the differences are highly technical and many manufacturers still consider the CMOS chip a charged coupled device. For our purposes, a chip sensor is a CCD.
* Standard Digital Cameras: This encompasses most digital cameras. They are characterized by great ease in operation and easy focusing; this design allows for limited motion picture capability. They have an extended depth of field.
This allows objects at multiple depths to be in focus simultaneously, which accounts for much of their ease of focusing. It is also part of the reason professional photographers find their images flat or artificial-looking. They excel in landscape photography and casual use.
* Digital SLRs typically have a sensor nine times larger than that of a standard digital camera, and are targeted at professional photographers and enthusiasts. They resemble ordinary professional cameras in most ways, with replaceable flash and lens components, which give the user maximum control over light, focus and depth of field.
They are also bulkier and more expensive than their casual-use oriented counterparts. They are superb for portraiture and artistic photography because they can be customized for various applications with a comprehensive range of exchangeable lenses.
Professional modular digital camera systems
High-end digital camera backs used by professionals are usually separate devices from the camera bodies which they are used with. (This is because most of the large- and medium-format camera systems in professional use at the time that digital capture overtook film as the professional’s medium of choice were modular in nature, i.e. the camera body had multiple lenses, viewfinders, winders and backs available for use with it to fit different needs.)
Since the first backs were introduced there have been three main methods of “capturing” the image, each based on the hardware configuration of the particular back.
The first method is often called “Single Shot,” in reference to the number of times the camera’s sensor is exposed to the light passing through the camera lens.
Single Shot capture systems use either one CCD with a Bayer filter stamped onto it or three separate CCDs (one each for the primary additive colors Red, Green and Blue) which are exposed to the same image via a beam splitter.
The second method is referred to as “Multi-Shot” because the sensor is exposed to the image in a sequence of three or more openings of the lens aperture. There are several methods of application of the multi-shot technique.
The most common originally was to use a single CCD with three filters (once again red, green and blue) passed in front of the sensor in sequence to obtain the additive color information.
Another multiple shot method utilized a single CCD with a Bayer filter but actually moved the physical location of the sensor chip on the focus plane of the lens to “stitch” together a higher resolution image than the CCD would allow otherwise. A third version combined the two methods without stamping a Bayer filter onto the chip.
The third method is called “Scan” because the sensor moves across the focus plane much like the sensor of a desktop scanner.
These CCDs are usually referred to as “sticks” rather than “chips” because they utilize only a single row of pixels (more properly “photosites”) which are again “stamped” with the Bayer filter.
The choice of method for a given capture is of course determined largely by the subject matter. It is usually inappropriate to attempt to capture a subject which moves (like people or objects in motion) with anything but a single shot system.
However, the higher color fidelity and larger file sizes and resolutions available with multi-shot and scan-backs make them attractive for commercial photographers working with stationary subjects and large-format photographs.
Webcams
* Webcams are digital cameras attached to computers, used for video conferencing or other purposes. Webcams can capture full-motion video as well, and some models include microphones or zoom ability.
These devices range in price from very inexpensive to expensive higher-end models; many complex webcams have a servo-controlled base capable of tracking facial motion with the help of software.
Interpolation
Image color or resolution interpolation is used unless the camera uses a beam splitter single-shot approach, three-filter multi-shot approach, or Foveon X3 sensor.
The software specific to the camera interprets the information from the sensor to obtain a full color image. This is because in digital images, each pixel must have three values for luminous intensity, one each for the red, green, and blue channels. A normal sensor element cannot simultaneously record these three values.
The Bayer filter pattern is typically used. A Bayer filter pattern is a 2×2 pattern of light filters, with green ones at opposite corners and red and blue elsewhere.
The high proportion of green takes advantage of properties of the human visual system, which is determines brightness mostly from green and is far more sensitive to brightness than to hue or saturation.
Sometimes a 4-color filter pattern is used, often involving 2 different hues of green. This provides a wider color gamut, but requires a slightly more complicated interpolation process.
The luminous intensity color values not captured for each pixel can be interpolated (or guessed at) from the values of adjacent pixels which represent the color being calculated.
In some cases, extra resolution is interpolated into the image by shifting photosites off of a standard grid pattern so that photosites are adjacent to each other at 45 degree angles, and all three values are interpolated for “virtual” photosites which fall into the spaces at 90 degree angles from the actual photosites.
Connectivity
Many digital cameras can connect directly to a computer to transfer data. USB is the most widely used method, though some have a Fire wire port.
Integration
Some devices, like mobile phones integrates digital cameras. Mobile phone cameras are much more sold than standalone digital ones.
Digital cameras need memory to store data. The higher one goes in pixel size, the more memory will be needed. Cameras use a removable memory card to store data, but the cheapest and smallest cameras may simply use fixed internal memory instead. Some cameras come with inbuilt memory as well.
Autonomous devices
An autonomous device, such as a PictBridge printer, operates without need of a computer. The camera connects to the printer, which then downloads and prints its images. Some DVD recorders and television sets can read memory cards too.
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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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19 Sep 08 Canon Digital Camera: the Better Way to Move in Past
Author: Jayson Pablo
There was an era when the past good times that we had lived happily were the matters of our memories only. With every new joy, those good times of past were being vanished from our memories and re-living them became so hard for all of us. Then the age of Art arrived and we all learnt to stock our memoirs in the form of paintings and sculptures. However, the boundaries of these methods were limited and hectic. The human culture was demanding more, then, in 1660’s the English Scientist Robert Boyle with his assistant Robert Hooke developed the first portable camera. This device was capable of capturing the events, thus, the humankind found their way to re-live their life. From the day of its inception, the camera has seen various changes in its style, performance, capabilities and looks.
From camera obscure to the modern analog cameras, the history of cameras is itself a legend. The concept of logarithmic camera was first reached its destination in the year 1972 and we got our first bona fide digital camera in the year 1990 with the name-tag of Logitech Fotoman. This camera made the use of CCD Image Sensor; it had the capability of storing the pictures digitally and making them available to download them in PC. From the year 1991, various companies such as Kodak, Fuji, Sony and others started manufacturing the High-end Digital cameras on very large scale. Their attractive products ranged from Simply Digital to the Professional Digital SLRs. When we aim these cameras at the object and fiddle with the shutter release button, the camera robotically focuses on the object and digitally takes a reading of the obtainable light and then with the help of the processor, CCD and ADC it interpolates the pixels to create crystal clear pictures.
Nowadays, having a digital camera is a non-stop passion for every one. There are many companies in the market, who manufactures these digital photographic engines, but some of them are prodigious. Canon is also among those prodigy masters. This giant offers very huge range of products from different categories. They also offer a superior range of digital still and video cameras. Canon Digital Cameras are one of the most significant products that are currently available in the market. These cameras employ high-quality features and tools to make them more efficient in the terms of quality and performance. These numerical photographic machines hold high-quality mechanism and the superb understanding of all colours so that they can easily tender the eye-pleasant lively images. Fathered in the year 1937, the Canon is now one of the biggest companies that offer qualitative technology for the cameras and optics. This company has redefined the way the world look at its past.
Canon has mind-blowing categories of digital cameras in its shelf. These categories hold the range of all way simple cameras to the superbly effective professional ones. These categories are- Digital Compact Cameras and Digital SLR Cameras. The Digital Compact Camera Category is consisting of two superb series named as IXUS and the PowerShot. Both of these series offers the cameras of astounding styles and great performances. The IXUS includes the cameras that are known as the ultimate Style Icons and combines unending grace with the avant-garde technology. In addition, the PowerShot series covers the range of point-and-shoot cameras. These masterpieces are amazing in looks and they capture brilliant images to cater the photographic feel of all levels. Digital IXUS860, Digital IXUS950, Digital IXUS960, PowerShot G9, PowerShot S5, and PowerShot SX100 are some of the highlights of the IXUS and PowerShot Series.
Whereas, the EOS Series of Digital SLR Cameras are the most widespread approach Digital SLRs. These digital cameras provide sparkling and snappish images with every shot. These cameras are admired and appraised by the photographers worldwide. Ranging from 10.1 MegaPixels to the latest 21 MegaPixels of superior CMOS resolutions, the EOS Digital SLR Cameras are making the world our playground, where we can reach to the new dimension creativity. If the life is all about finding new things then the Canon Digital Cameras are the ever-best things to find and explore.
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19 Sep 08 Digital Cameras - How They Work
Author: Ted Burns
Digital cameras come in various sizes, shapes, and specifications and offer a variety of impressive features.
Digital cameras are quickly gaining popularity around the globe. Many people already own one and routinely use it for their own pictures. Their use have become part of the culture among many communities and industries.
Digital cameras also have become part of a broad package of combined features with other hand-held tools, such as PDA devices and cellular phones. This makes the use of both devices much more convenient, having them combined in one, rather than two or more, functional instruments.
Digital cameras, moreover, not only can be used for still photos as with conventional cameras, but also for taking videos. An owner needs only to upgrade the camera’s memory card to increase storage capacity.
The marketplace offers a number of digital camera brands that provide a wide range of features. Olympus, Canon, Nikon, Kodak, and HP are some of the better-known brands of cameras offering the conventional 35mm to digital. Other key camera manufacturers include Sony, Panasonic, and Casio.
Digital Camera Considerations
Differing from conventional cameras, digital cameras have a small LCD screen, and sometimes an LCD screen plus viewfinder. The LCD screen is similar to TV screens that allow the photographer to see the picture, even before snapping it. Some have large screens that enable the photographer to see more of the subject and background.
Digital cameras also come with memory slots that hold a memory card or “stick.” The amount of memory available in them ranges from megabytes to gigabytes. Of course, the more memory, the greater the cost. However the extra storage capacity may be well worth the additional expense.
Another purchasing concern is the battery. Some digital cameras use disposable batteries. However, they wear out quickly, so most people recommend rechargeable batteries for longer energy life. Typically a rechargeable battery and a charger come in bundle with the camera unit.
Finally, consider the way the pictures are downloaded. Though many digital cameras come with a USB port which easily connects to a computer, there are others that necessitate removing the memory card and positioning it with a reader to download pictures.
Digital Camera Features
Camera buyers should know at least the basic features of their camera of choice before making an expensive purchase. Though the snapping of pictures is fundamentally the same from camera-to-camera, there are features that make one brand more appealing than others.
For example, the number of mega pixels used when taking pictures - meaning millions of pixels that help with the clarity of the pictures - should be one of the primary considerations to most buyers. Pixels are the individual “dots” that make up the content of pictures.
As such, cameras offering a greater number of pixels can produce larger images with better resolutions than those with less. Be aware, though, that cameras using a more pixels consume more camera memory when storing the images.
The camera’s zoom function is also critical. Most digital cameras are enhanced with a two-zoom capability; the optical and digital. Optical zoom uses a moving lens and makes the subject in the picture appear closer, while digital zoom crops or stretches the image.
Finally, don’t neglect the importance of the camera case’s durability. Some digital cameras are made predominantly of plastic materials - and are consequently more fragile - while others are comprised of a combination of plastic and metal alloy.
Either type has limitations in the amount of jarring that can be sustained without internal damage. Spend a little extra money to purchase a case that will protect your camera investment.
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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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