Using Aperture Inspector, here is a quick analysis of the equipment I used at The Lone Star Rally. I took 152 (63%) images with the a700 body and 89 (37%) with the a550.  I used three lenses.  I took 139 (58%) pictures with my old Quantaray Tech 10 70 – 210 f/2.8 lens.  I took 73 (30%) with my Quantaray 18 – 35 f/3.5 lens, and 29 (12%) with my Tamron 90 mm f/2.8 Macro.