hi,this Pro Kit filter can not used on 95mm size lens,because we do not have 95mm adapter ring. 

Yes, it will fit any Sony e mount body, either full frame (a7..., a9...), or aps-c (like a6500, etc) 

hello , we are the seller, you could use an adapter to step the 52 down to a 49 , there is a adater ring kit https://www.amazon.com/dp/B00JL4HGAI, 

yes, i had no problems with infinity focus with this adapter. the only FD mount lens i use anymore with my sony is a vivitar 20mm, and i pretty much only shoot infinity focus with it. 

The kit comes with 9 adapter rings for all sorts of lens sizes. You screw the adapter onto your lens, then the square piece screws onto the adapter and the filters slide into the square piece. The lens sizes the adapters fit are 49 mm, 52 mm, 55 mm, 58 mm, 62 mm, 67 mm, 72 mm, 77 mm and 82 mm. It matters more of the lens size than the camera you are using. Have fun with them!!