I found one of the common spotmatic/tak 1:1.4 50mm combo locally on Craigslist.
I got a darn good deal on it so im not too paranoid about damaging it but it has major yellowing in the rear element. I've read that exposing the lens to strong UV light will decrease or cure the yellowing however i was under the assumption that UV light damages lenses, hence the reason for UV filters...
Here is a comparison to show how severe the yellowing is.
Left image was taken with a 55mm takumar 1.8, and on the right is the 50/1.4
So am I going to damage my lens? How do you all cope with the yellowing, i personally like the patina in the picture above, but under different circumstances I think i will be annoyed.