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malcolm · 02/25/08, 06:27 PM

I've heard of this condition before, and have it on my 80's vintage 50mm Summicron. As I recall, the recommendation was to keep lenses at their maximum aperture when not in immediate use to minimize lubricant migration.

02/25/08, 06:27 PM	#4 (permalink)
malcolm Benutzer Join Date: 03/27/05 Posts: 69	Re: Oily aperture blades I've heard of this condition before, and have it on my 80's vintage 50mm Summicron. As I recall, the recommendation was to keep lenses at their maximum aperture when not in immediate use to minimize lubricant migration.