Declick Contax Yashica Zeiss 50mm f1.4
From apertus wiki
The Carl Zeiss Planar T* 50mm f/1.4 for Yashica/Contax is a true gem for cinema usage photography lenses. Here is a report/guide how to de-click it.
1 Step 1
Remove these three screws. Be careful to use a quality screwdriver (cheaper ones tend to bend and grind off the screw)