I just picked up a used A7 and plan to use my old Pentax M lenses, at least for a while. (Accordingly, I picked up a fotodiox adapter.) Any advice on setup and usage for the A7? I've been scouring the net and have found things like turning off WiFi to save power, sensor reflection issues, replacing the lens mount with a tough e mount, etc. However, i've always gotten good advice from those on Amin's forums so i thought I would ask. This is my first venture into the E Mount forum. Thanks in advance.