I have a 5D3, and my wife wants to play photography together and go out to shoot together. What machine suits her? 5D3 or 7D or 60D?

It is recommended that the lighter the fuselage, the better. EOS M and 100D can be considered. Personally, I prefer the former, and I never have to worry about all kinds of problems brought by the reflector. Moreover, the shorter the flange distance, the more the bayonet lens can be transferred.

If you don't need to change the lens, you can use Sony RX 100, and if you want to buy a high-end lens, you can use Leica X2.

I really don't recommend buying a heavy fuselage. Now I only try to use the lightest body and lens, except sometimes I use 5D. The three-digit fuselage is too heavy now. Photography comes first, equipment comes second.