18 Sep 08 Digital Cameras - the Constant Innovation and What to Look for When Buying
Author: Boris C.
Main Concept And Evolution
When digital cameras became common, a question many photographers asked was whether their film cameras could be converted to digital. The first recorded attempt at building a digital camera was by Steven Sasson, an engineer at Eastman Kodak. The first true digital camera that recorded images as a computerized file was likely the Fuji DS-1P of 1988, which recorded to a 16 MB internal memory card that used a battery to keep the data in memory.
Digital cameras can include features that are not found in film cameras, such as:
- Displaying an image on the camera’s screen immediately after it is recorded.
- The capacity to take thousands of images on a single small memory device.
- The ability to record video with sound.
- The ability to edit images and deletion of images allowing re-use of the storage they occupied.
A digital camera is a camera that takes video or still photographs, or both, digitally by recording images on a light-sensitive sensor. Most digital cameras measure subject distance automatically using acoustic or electronic techniques, but it is not customary to say that they have a rangefinder. The resolution of a digital camera is often limited by the camera sensor (typically a CCD or CMOS sensor chip) that turns light into discrete signals, replacing the job of film in traditional photography.
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 are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles and even webcams. Webcams are digital cameras attached to computers, used for video conferencing or other purposes.
When You Buy Digital Camera
Measuring the “pixels per dollar” as a basic measure of value for a digital camera, there has been a continuous and steady increase in the number of pixels each dollar buys in a new camera consistent with the principles of Moore’s Law. Before you buy digital camera, it is important to determine what kind of pictures you want to take with it. Be sure to check first its capacity to produce high quality photo images and don’t forget about camera’s batteries - make sure they are rechargeable.
When you buy digital camera, sometimes the spending does not end there. For instance you may want to buy additional memory if the one that is already included doesn’t suit your need and its capacity is not enough for you. This is why you must make sure that the gadget that you buy has not only a “built-in” memory or a card slot for external and additional memory, but also includes memory card with good enough capacity.
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.
It is essential for you to feel comfortable holding your digital camera while shooting. So, before you buy digital camera, the right thing will be to test and check if you are comfortable holding it and using it. Special features that will suit your needs should be thought about, too before you buy digital camera. 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. When buying digital camera in online store, make sure you already know what you want and start sorting by lowest price first and later calculating shipping and sales tax.
With these information, you can now figure out what you really need and want before you buy digital camera.
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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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18 Sep 08 You Need a Digital Camera Buying Guide
Copyright (c) 2008 Orlando Thompson
The best way to find out about digital cameras is with a digital camera buying guide. You can find out all the information about each specific digital camera and what features the digital camera has as well as how they operate. The buying guide is a great place to start shopping. Some of the information in the guide will include the battery options, storage, lenses and megapixels.
The information you find will help you choose a digital camera that will fit your needs. This is the most comprehensive guide for digital camera buying. You can get this guide in print or use the Internet, which has the same information. The digital camera buying guide has reviews of the digital cameras, which should help you decide if the digital camera is worth the time and money.
The reviews come from testing the digital cameras to see the ease of use and can explain how the features work or do not work. If you plan to buy a digital camera, you will find the buying guide very useful. For the first time user, this guide can be beneficial. If you already have a digital camera and want something comparable or better, the guide is where you should look.
You can find over thirty-five hundred reviews of digital cameras when you look at the digital camera buying guide. Many online sites have all the information you need to decide which digital camera will work the best for you. The guide will help you with things that you need to consider when buying a digital camera. If you are looking for a professional digital camera or a digital camera for general pictures, the buying guide will help you choose the best one.
Before you go and buy a digital camera, you need to compare different digital cameras to find out which ones are highly rated plus which digital cameras have all the features you are looking for.
It really depends largely on what you personally are looking for in a digital camera but these are comments of different personal wants and the features that they found important.
The Snapshooter
I want to take photos that I can e-mail to friends and family, post on the Web, or print in sizes smaller than 8×10 inches. I’d like a digital camera that is easy enough for the whole family to use and small enough to take anywhere. I’ll be printing on an inexpensive, all-purpose inkjet printer or getting photo prints from the local drugstore, though I’ll consider buying a photo printer if I like the pictures enough. If this is your purpsose these are The specs that matter. Resolution It doesn’t matter. Most cameras on the market today have sufficient resolution for your needs. Price $150 to $300, lens type Zoom (range encompassing at least 38mm to 114mm, 35mm equivalent) Storage media Internal memory, CompactFlash, Memory Stick, xD-Picture Card, or Secure Digital/MultiMediaCard Photo file format JPEG Interfaces USB, NTSC/PAL television connection, exposure controls automatic, programmed scene modes, exposure compensation (for tweaking the automatic exposure), focus controls automatic, flash modes automatic, fill, red-eye reduction, software Photo stitching, photo album, slide show, multimedia VGA (640×480), 30fps video-clip recording with sound, other cool features to look for Direct-to-printer (PictBridge) output compatibility, in-camera red-eye removal, automatic exposure fix, optical or mechanical image stabilization, face detection.
The Trendsetter
I like to buy the newest, shiniest toys before anyone else does. I want to impress my friends and business associates with the latest technologies and coolest features, but not if it makes the product too complicated to use. Although I do want the best deal available the cost of the digital camera is not my number one concern. For the trendsetter the specs that matter are resolution 8 megapixels or greater, price Less than $1,000 lens type Zoom (range encompassing at least 36mm to 108mm, 35mm equivalent), storage media Internal memory, CompactFlash, Memory Stick, xD-Picture Card, or SD/HC, photo file format JPEG, interfaces USB, HDMI, or component HDTV television connection, exposure controls automatic, programmed scene modes, exposure compensation (for tweaking the automatic exposure), focus controls automatic, flash modes automatic, fill, red-eye reduction Software Photo-stitching, photo album, slide show, multimedia 720p (1,280×720) video-clip recording with sound and functioning zoom during video, other cool features to look for Ultracompact design, Webcam capabilities, voice recording, Wi-Fi support, 3-inch LCD, simultaneous video and photo capture, 12X or greater optical zoom, optical or mechanical image stabilization, face detection.
The Business user
I need to be able to shoot onsite or in the office, photograph products and people for ads and publicity in print and on the Web, and get professional-looking results without hiring a pro. I need to get prints in a variety of ways, including from a color laser printer or quick-print shop. I have to share the camera with my coworkers. The specs that matter for the business user are resolution 7 megapixels or greater, price $400 to $700, lens type Zoom (range encompassing at least 36mm to 130mm, 35mm equivalent), storage media CompactFlash, Memory Stick, xD-Picture Card, or SD/HC, photo file format JPEG or TIFF, interfaces USB, NTSC/PAL television connection, exposure controls automatic, aperture- and shutter-priority, manual, choice of metering modes, bracketing, focus controls automatic, manual flash modes automatic, fill, red-eye reduction, external flash compatibility, software photo editor; collaborative image sharing, multimedia voice recording, built-in speaker for audio playback, other cool features to look for Support for digital security, Wi-Fi, text-capture mode, world clock.
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