Re: [OM] Re Oil on Aperture Blades

[Gary Reese]

Dave D. writes:

<< But having never seen a lens with oily aperture blades,  where does
the oil come from? >>

#1 lens killer in the desert southwest USA.

Liquified grease, often from superheating a lens (e.g., leaving it out
in the sun or in a closed car).

Gary Reese
Las Vegas, NV

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