<FONT size=4>All right, here is my patented Best Buy sales rep digital camera shpeel.
Megapixels: The more the merrier:
1MP: Good for computer use, wouldn't really print it.($199 and down)
2MP: Good for about 5x7 prints(or, printing photos as is w/o much if any editing)($299ish)
3MP: Good for about 11x14 prints(Or 8x10s and below with editing)($399-$599)
4MP+: Good for Very large prints(or 8x10s and below with LOTS of editing)($599 and up)
Zoom: Optical is using the actual lens to zoom like a real camera, digital uses software interpolation to blow the images up, reducing image quality. Optical is a must. Most cameras have a 3x optical lens.
Brands: I reccomend Canon, Nikon, Olympus, and Sony. Typically, they use better lenses, etc. I do not reccomend any current(DX-series) Kodaks, HPs, or Fujis, as they have high failure rates(Fuji's die a lot, in my experience) and/or just aren't great cameras(Kodaks and HPs suck IMHO).
Memory: 3 main formats:
<U>CompactFlash</U>: used in Canon, Nikon, HP, Minolta, and Kodak cameras. Can be expanded anywhere from 8MB to 1GB. Higher end cameras feature a type II CF slot which can accommodate an IBM Microdrive. This is the only memory card format where brand really matters as CF cards have the memory controller integrated, and this can vary in speed from card to card and brand to brand.
<U>SmartMedia</U>: Olympus, Fuji, and Toshiba cameras. Expandable to 128MB(though not all models can take larger cards). Oldest standard. Officially has been replaced by the newer XD cards 3 weeks ago. The memory controller is built into the device, not the card, which makes the card easier to produce as well as making brand more or less irrelevant. The downside is many older SM devices cannot use larger SM cards.
<U>Memory Stick</U>: Sony cameras. Expandable to 128MB, though may still scale higher. Typically a little more expensive per megabyte than the previous 2 formats.
1.3MP images are typically ~300KB in size(These sizes can vary quite a bit, as both the compression ratio in the camera and the subject affects file size.)
2.1MP images are typically ~1MB in size
3.3MP images are typically ~2MB in size
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Batteries:
AAs: Most cheaper digitals will take either 2 or 4 AA batteries. You have a few options for these:
<U>Alkalines</U>: Normal 'ol alkaline AAs will last for about 20 minutes of continuous use in a camera. Not a great idea unless you can't get anything else.
<U>Lithium</U>: Long life disposables. A set of four lasts for about 4 or 5 hours of continuous use(about a long day of picture taking). A set of 4 runs about $12-$20
<U>Nickel Metal-Hydride(NiMH):</U> Rechargeables that replaced the older NiCADs. Give about 2 to 3 hours of continuous useage on a set of 4. 4 packs go for about $14, charger kits come in both 12 hour and 1 hour varieties and start around $25 for a 12 hour kit and $35 for a 1 hour kit.
Lithium-Ion: Mainly used in higher end cameras. Same technology as current camcorder and laptop batteries. Best charge per size. Durations vary from 1 hour for smaller batteries to 3+ hours for larger ones. Prices also vary accordingly. These batteries are proprietary per camera. </FONT><B>
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