Hello. I'm new to the forum and to vintage lenses. I recently picked up a K1000 that came with a 135mm f/2.5 Takumar Bayonet lens. I noticed some spots which are visible looking through the rear element, but appear to be on the inside surface of the rear element. (See attached picture.) I think this is probably fungus. Agree?
I haven't developed the film I've shot with this lens yet so I don't know how much it will affect image quality, but with spots that prominent on/near the rear element, I can't imagine it won't seriously degrade image quality. Any suggestions as to the best way to deal with this? As this is a fairly simple four-element lens, I'm considering taking it apart to see if I can clean off the elements affected. What would be the best way to clean the rear elements without damaging the coating and the glass?
I'd rather not send it out anywhere, as the lens isn't worth that much and I don't want to spend any money fixing it if possible. I got such a good deal on the camera and outfit that I won't feel too bad if the lens isn't salvageable.
Thanks for any advice you can provide.