The 55/1.2 Challenge
After an interesting discussion about the whereabouts of all the 55/1.2 (M42/PK) lenses floating around we want to finally collect some real facts which will be listed here.
Main goal would be to indentify the different versions and makers.

Please feel free to participate in the effort by sending in the following data, if you own a 55/1.2 M42 lens

• - exact labelling, mount, size & weight
• - # of blades, closing direction of blades, diaphragm “clicks”
• - filter diameter, etc
• - and of course photos of the details