I'LL talk about Canon SX20IS.  I shoot all kinds of stuff with all kinds of cameras. I am a working photographer who shoots for advertising and corporate client as well as to make images for my own books about photography. Over the last two years I've been using small cameras like the Canon G10 and the SX10 for more and more of my work. In the studio, shooting set up shots or small products these cameras shine by dint of their easy to use Live View and increased depth of field. When I bought the SX 10 it was for the long range of the zoom lens which meant I could shoot anything from a construction...