Originally posted by kiwi_jono If you were able to take some photos it would help. Are you sure the marks are on the outside of the element because some of those spots you describe sound like they could be fungus.
If the damage is just the coatings (like so called "cleaning marks") then its unlikely to have much effect on the performance on the lens - potentially it might be a little bit more prone to flare but otherwise probably not noticeable in your photos.
I like this post on how extreme the damage needs to be, in order to be readily noticeable:
How Dust and Damage on Lenses Affect Image Quality I've sent my Rikenon out for adjustments along with my ME Super, because of some tolerance issues the lens can't reach infinity at the 100mm end (but has no problem on my MZ-M), and my ME Super deserves a good CLA. I've asked the technician to watch out for fungus, but I am absolutely sure the things are cleaning marks - they are identical to the ones on my Helios-81H which has very soft coating, but only much less visible, and I am sure they are not on the inner surface and does not look like fungus (I've had fungu growing in one lens or two so I know how they look like).
I'll post the marks on my Nikon later when I get back home.
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