Hello,
few days ago I got a 500mm Sunagor lens. It was slightly bent, aperture blades were stuck, but it was (almost) free
I took it apart, managed to fix all the problems but one.
One of the optical lenses is very matte on one side. Looks like covered with oil. I don't know enough about optics to correctly identify the problem.
So here go the pictures.
Is is something that can easly be removed / restored or this piece of glass is beyond repair?
Any ideas on how (and what with) to restore the lens?
Thanks