maybe this should be in SLR, as the lesn is from a SLR, but the provenance -imho- makes it more suitalbe as there are more experts in this subforum. Feel free to move it somewhere else if you consider it approppiate.
After 3 years of continuous use -or abuse- my trusty Helios-44 has developed this -don't know how to call it- stain under front element
image host url
Does not affect quality of image but.. I'd like to get rid of it
I would say it's not fungus, but I've got the doubt about delamination or, simply, oil separating from grease that found its way where it should not be.
So there goes my question
If it's oil it should be cleaned. But can it be cleaned?
I mean, it's just a matter of taking out front element.? ( I mean I hope and guess won't have to separate any glued or cemented elemen ts, in that case it would be a definite no-no)
I would be very grateful if somebody could enlightnen me about that stain and how to get rid of it