First off this isn’t going to be a totally technical blog with all the numbers and technical differences between the 3 cameras, yes there will be a bit but there are enough people out there doing stuff like that. I’m more interested in the how it feels, what I see personally as an advantage or disadvantages for my shooting needs.
I own both A mount cameras (A900 and A99) and Roland bought his fresh out of the box A7 (with A mount adapter). The lenses I decided to use are the 4 lenses I use the most: Zeiss 24-70 2.8, Sony 50mm 1.4, Zeiss 85mm 1.4 and Minolta 100mm 2.8 macro. I deliberately chose lenses I use a lot and split the shoot up in to 3 parts east part had a different lighting set up (although each set up was similar ). The first set was shot at f8 the second set at f5.6 and the third at F2.8, I deliberate chose the 3 apertures that I use the most so that the whole shoot was typically in a style I would shoot at a normal shoot and not some thing I’m experimenting with to blog about.