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LCD display (digital viewfinder)
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Most of these controls are common to all digital cameras
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How to Do Everything with Your Digital Camera
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Digital cameras use a series of menus in the LCD display to operate the more advanced or less frequently used features
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CHAPTER 1: Welcome to the Future
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The Upgrade Race
Do you need to get a new camera next year just because the megapixel bar has been raised or some other cool new features have surfaced No, you don t Just like your desktop computer, a digital camera isn t obsolete just because a new model came out with more memory or horsepower It s only obsolete when it no longer does what you want it to do Consider my main digital camera Although I get to see and play with a large number of cameras every year, I ve stuck with what you ll surely consider to be an ancient model the several-year-old Olympus D-620L I like this camera because it has a TTL viewfinder and an excellent macro, or close focus, mode The downside It s a mere 14 megapixels That s so Twentieth Century That s okay, though I use the camera to take screenshots for books, magazines, and Web sites I rarely need a resolution much beyond 1,024 768 for those applications, and that s well within the capability of this venerable old camera For my more creative photography, I upgraded to the 5-megapixel Olympus e20n last year, and I suspect it will make me very happy for the next several years The bottom line Find a camera you like and stick with it Digital cameras are a costly investment, and they won t pay for themselves in film savings if you replace them every year or so with a newer model
Choosing Your Own Digital Camera
If you haven t yet made your digital camera purchase or if you are planning to upgrade you re in luck The field has never been more crowded with excellent choices, and as I mentioned earlier, technology advances keep making these cameras better each year Even though the camera field is evolving all the time, the basics really don t change The next few sections cover the most important elements to consider when shopping for a camera
Resolution
First and foremost, figure out how much resolution you need This should be the first decision you make, because it determines what cameras you will be evaluating Use this handy table to decide what megapixel range you need:
Megapixels Sub-megapixel (VGA) 1 megapixel 2 megapixel 3 megapixel 6 megapixel Print Size Onscreen only (Web, email) 3 5-inch prints 5 7-inch prints 8 10-inch prints 13 19-inch prints, prints from small crop areas of the original image
How to Do Everything with Your Digital Camera
Remember that even if you choose a 6-megapixel camera, you can set it to capture lowerresolution images even a mere 640 480 pixels making your camera quite versatile Or you can capture a high-resolution image and reduce its size on the PC in an image-editing program (I explain how to do this in 12) The higher the resolution, the fewer pictures you can store at a given time, so there is a bit of a trade-off If you buy a camera with too little resolution, though, you can t ever add information to a picture, and trying to blow it up to print beyond its ideal size will generate a pixely, grainy mess
Optics
It is a camera, after all not a computer Don t forget to weigh the optics carefully Your camera s optics should be made of glass, not plastic, and multiple elements help keep everything in sharp focus through the camera s entire zoom range
Working with Basic Lenses
Also consider what kind of pictures you want to take A fairly wide-angle lens is good for landscapes, indoor shots, and general-purpose photography If you want to take portraits or wildlife shots, a longer reach is important But take a look at the specs for a digital camera what the heck is a 93mm lens Is that wide angle Who knows That s why most digital cameras also advertise their focal length in 35mm equivalents in other words, if this digital camera were a 35mm camera, its 93mm lens would give you the same picture as a 50mm camera, for instance Making sense of all this can be a pain Worse, there s no one formula you can use to convert digital camera focal lengths into 35mm equivalents That s because the focal length of a camera lens is based on the size of the film, which in the case of a digital camera is the CCD chip CCDs vary in size, and there s no industry-wide consensus on standardizing the size of the CCD in all cameras So, your best bet is to check out the equivalency figures on the camera box or on the manufacturer s Web site I ve also concocted a formula you can use in a pinch to convert digital camera focal lengths to their 35mm equivalents Since CCD sizes vary, this is only an approximation In the following formula, AFL is the actual focal length of the digital camera s lens, usually a small number like 5mm or 10mm: 35mm equivalent focal length = AFL / 19 So if the camera has a 65mm lens, for instance, you can run it through this handy little equation and determine that it will work like a 35mm lens
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