Hello! I need to disassemble a wide angle SMC M 28mm f/2.8 , because I need to clean the internal lenses (dust and other stuff), and I need to clean the diaphragm. I started to disassemble it: now i divided it into 3 parts, and the central part is the body of the lens: it contains lenses and diaphragm. Now I need to disassemble the frontal lens and the back lens from the body: how can I do it? Someone can help me? Thank you very much, Andrea.
I have an old Pentax camera with the bayonet type lenses. The teleconverter has got stuck on the camera and cannot be removed. You can turn it but cannot disengage from the camera. Can you possibly advise what to do.
