I have finally taken delivery of a beautiful F5 camera and an MF-28 back. The camera itself came without the back and I was able to install batteries into the MF-28 and install it on the F5. I love that it's easy to do without any tools!
With the standard F5 back, the camera works great. All the function buttons and dials are fully operative. I can change modes, move the AF point, ect. No issues. Works exactly as I would expect.
I installed the MF-28 back, with a fresh set of CR2025 batteries, and the camera is all but inoperative. What ever settings I had on the camera before the back swap remain, but I cannot change anything. I can't change the camera mode, I can't modify the ISO settings, I can't move the AF point. Pressing the buttons on the back of the MF-28 and rotating the command dials has no effect whatsoever. The controls just go dead.
The MF-28 shows a full battery meter on the screen and is perfectly solid when the F5 is powered on. When the F5 is powered off the MF-28 flashes every couple of seconds but doesn't lose the time or seem to be affected by it.
With or without the back, AF works and the shutter works but with the back installed I cannot make any settings changes to the camera, or on the back. Am I missing something? I've read through the manual looking for any clues as to why the controls are locked out but I can't seem to find any logic for it...
Do I have a dud back? It's in great physical condition but that doesn't mean it's not fried on the inside somehow...
Any help anyone can offer would be quite appreciated!
I've pulled the batteries from the back and the F5 but no change. It's very odd. The back shows acurate data about the exposure settings, same as in the viewfinder and the top LCD...
Curiously, the only change I can make to the camera, as I've been poking around, is that I can move the AF sensor from the bottom option, to the middle. I can't move it to the top, nor to the side. It doesn't take a lot of force or repeated pressing to make it happen.. but it's the only change I can seem to make.
Just a thought but I would also carefully check the contact between the F5 body and the MF-28 back if you haven't done so, check that they are aligning and seating properly and make sure the contacts are clean.