When choosing a system camera, we look hard at the sensor. Naturally enough that is a big factor on the final image IQ.
I recently bought an A7 and while I have options for adapted lenses its the system lenses that left me wondering if I would be better off with a Fuji XT-1.
The reason: is its about the lenses. I want a compact travel system.
The Fuji 28-85 equivalent offers f2.8 at the wide end and is substantially smaller, than the Sony f4. The Fuji system has a 21mm equivalent prime that was one reason I left the m4/3 system. Add the Fuji's dial driven control deck and I feel the loss of "full frame" to APS-C is worth it. From the images I have seen the Fuji will be enough res/detail for me anyway.
I am in no way trying to be a fan boy for any system, rather just analyse what will work well.
I have ageing eyes and even now feel I should move to a DSLR rather that EVF mirrorless, but size and weight are very much a driving factor for me.
Am I crazy to move "down"?
As I say, "its about the lenses"