Going back to my previous post about the 2.8cm LTM I picked up.
First picture is of the lens in the original condition before I did a good CLA on it. Took a risk but it really paid off (sale picture).
Second is it on its proper home all cleaned up.
Third is with its 2.8cm cousins of other mounts. Non-AI 2.8cm f/3.5 F Mount, Nikon Rangefinder S mount 2.8cm f/3.5 and the Leica Thread Mount 2.8cm f/3.5. Amazing how flange distance and mount changes the design and size of the lenses. All three for "full frame" 35mm coverage.
Last two shots, Nikon Df and 55mm f/3.5 Micro-Nikkor