d800 and Zeiss zf.2 problems when in manual

[CraigM]

New to Nikon cameras for video and feel like a newbie. Testing out a d800 with a set of Zeiss zf.2 lenses for video work. Notice when I put the camera in "M" manual mode all 4 zf.2 lenses we have still auto expose. That is, I can stop down and point the camera at a dark floor and the aperture ring will start to automatically rotate to a decent exposure without touching a thing. If I lock the exposure ring on the lens and try to use the forward camera dial for exposure nothing. In the manual it says for CPU lenses in manual mode use the back dial for shutter, which works (24fps movie setting/50 shutter speed) and use the forward dial for exposure, not working. Obviously not understanding something. I know it's got to be a menu or dial setting I just have not discovered yet. zf.2's do have a CPU for everything but AF so not sure what is going on. Any ideas?

Thanks!

*Addition: Will add that the same thing happens when taking stills. Tried a DX 18-55mm Nikon lens and everything works like it should. Anyone else have a d800 and a zf.2 lens they can try in manual mode? Thank you.

 

[Fluoro]

I don't know why it's not working for you. Works as expected for me.

When I select "m" and lock the aperture ring on the lens at the smallest f-stop the forward camera dial then adjusts the aperture.

I'm no expert so maybe there's a simple explanation for your issue? Maybe do a factory reset?

Hold down the QUAL button on top left side and "+ /-" bracket button on top right side at the same time for a few seconds. Camera should turn off briefly and then restart with factory settings.