i've never had a lens with fungus before, but i got an old nikkor HC 5cm f/2 super cheap and it has something funky on one of the elements (in addition to lots of little scratches on the front element. anyway, i was wondering if this is fungus or something else, and what the chances of somebody being able to get it cleaned off would be.
who knows, i think the seller got it at an estate sale. shockingly, pictures come out all right after a large curves adjustment and a bit of added clarity, though it does have a certain low contrast "film" look to it. i think i must be losing at least one T stop on exposure though. http://farm5.static.flickr.com/4085/5127475331_d63522e823_o.jpg
carstenw wrote:
If it is just on the outside, it looks like something ate away at the coatings.
it looks like it is just on one lens surface, but an interior one - it almost looks like it's between the 2 cemented rear elements, but it's hard to say for sure.
It could be separation too. Separation takes two common forms. Circular swiping patterns and thousands of white-ish bubbles. This looks like it could be the later. <shrug>
Take it apart and if it's actually on the surface then it's not separation. If it is doublet or triplet separation you won't be able to tell which surface it's on without examining it directly through a loupe or something similar - as is very often the case.