Are any of your cameras DSLRs? http://en.wikipedia.org/wiki/Digital_single-lens_reflex_camera A quick way to determine this is if you can see what you are about to photo on the camera's LCD screen the camera is not a DSLR - you have to use the viewfinder. I bought a Canon T1i for the business and family photos. Although not as portable as a point & shoot it takes great photos. There is learning curve, I'm slowly getting better at taking photos of my parts.