Originally Posted by
bagold
I would have thought the Sony A7(R) is one of the smallest full frams DSLRs in the market now?
It is not a DSLR. There are no reflecting lens (mirror) element in the body. Thus it belongs in the 'mirrorless' class. And, along with the excellent RX1, quite above the posters capabilities.
I think a low-mid m4/3 system, particularly from olympus, will provide the snappiness he needs