jamais
Established
The battery holder P-5 has its tripod mount not exactly but close under the optical axis. The 167MT does not have a mirror lock-up but as already mentioned a well-damped morror slap. Here is mine:If you plan on doing a lot of tripod work, then note that the tripod socket is not central under the lens axis on the 167MT. This could be a real pain.

167MT by camerafred, on Flickr
I am currently looking for a 2.8 Sonnar so please do not drive up the prices right now...The 85 Sonnar is an excellent lens and often overlooked in favor of the 85/1.4 Planar.