#1. "RE: Nikon D800, Zeiss 35mm/f2 --- overexposure" In response to Reply # 0
There are two types of Zeiss 2/35 lenses. If you have the older Distagon T* 2/35zf you have to fill in the non-CPU Lens Data, focal length and maximum aperture, to allow your camera to accurately meter. If you have the newer 2/35zf.2 this is not required, but you have to lock the aperture ring at the 22 position. I have had outstanding results with my Zeiss lenses, 2/25zf.2, 2/35zf and 2/100zf, on the D800.