Zeiss ZF lenses and mirror clearance on Canon 5D

Several readers have emailed to ask if there is a mirror clearance issue with the Zeiss ZF lenses on the Canon EOS 5D. With Contax/Zeiss lenses for the Contax SLR, there is indeed a problem with certain wide-angles, but there is no such problem with any of the Zeiss ZF lenses; I have mounted each of the following lenses on the Canon EOS 5D using the CameraQuest Nikon-to-Canon adapter, and taken photos without incident:

• 25mm f/2.8 Distagon
• 35mm f/2 Distagon
• 50mm f/1.4 Planar
• 50mm f/2 Makro-Planar
• 85mm f/1.4 Planar
• 100mm f/2 Makro-Planar

Always use caution when mounting an unknown/untested lens on a new camera body with an adapter. Extreme wide angles should be especially suspect. However, excepting a few rare Nikkors, all Nikon F mount lenses have no issues on the Canon EOS 5D.