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I have a question about digital SLRs. Right now I have a Canon point-and-shoot with manual controls (Program, Aperture priority, Shutter priority, Manual modes, exposure compensation, auto or flexpoint autofocus, ISO 100-400, etc.) I'm okay with the larger size of an SLR and with the shorter battery life, but what will an 8mp SLR do that an 8mp point-and-shoot with manual options won't? Do any of your SLRs allow you to see the image on an LCD on the back of the camera, or do all SLRs require you to look through the eyepiece? I really value your opinions - thanks in advance.