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08-27-2012, 01:50 AM   #1
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Eroded coating?

Is there a way to repair a lens with damaged coating? is this something eric can do? Cheers.

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08-27-2012, 02:18 AM   #2
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Is that the outside coat or inside?

Sometimes it is oil contamination that refracts to look like coating loss.
08-27-2012, 02:34 AM   #3
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Looks a lot like the elements are separating. Not a whole lot that can be done about this except for re-gluing them, which is not an easy process. What lens is it?
08-28-2012, 01:49 AM   #4
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Thanks for your responses. The marks are on the outside (it's an old tak), I think. Does that make a difference re whether or not it's a coating loss or rear lens separation?

Btw, how can one tell the rear elements are separating? Thanks.

08-28-2012, 02:03 AM   #5
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Are you sure it is on the outside? Can you feel the gaps in the coatings? Lenses create optical illusions, separation can look like a surface defect, but really isn't.

Exactly which Takumar is it?
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