There's a long running joke in photography land about the types of cameras that photographers have. It's several brands long, but here are the two that matter!
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Canon owners
You appreciate the benefits of owning a camera system that leads in cutting-edge digital imaging technology and that offers a wealth of body, lens, and accessory options for every level of photographer, from lowly consumer to top professional. You will switch to Nikon.
Nikon owners
You appreciate the benefits of owning a camera system that leads in cutting-edge digital imaging technology and that offers a wealth of body, lens, and accessory options for every level of photographer, from lowly consumer to top professional. You will switch to Canon.
(For the rest of the article... go here http://shutterfinger.typepad.com/shutterfinger/2010/10/wh... )
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I would STRONGLY recommend a DSLR in either brand. In GENERAL Nikon cameras have better lenses, and Cannon have better processors. Which = they both take the same sort of quality picture.
http://www.dpreview.com/camerareviews/?category=slrs&... is hands down the best place for reviews