Aperture Blade Oil & how to clean it

fosterchen — Fri, 01 Feb 2013 17:35:24 +0000

So I've been looking at some old lenses on Ebay, and many state that the lens may have some oily aperture blades. Anybody know of how to clean aperture blades the proper way? I've search on PV, and I've only found to use an ultrasonic cleaner which I don't know what that is.
Is this something worth doing to bring back the glory of old vintage lenses? It's true they don't make them like they used to. And how bad is having oily aperture blades? Where does it come from and what does it look like?

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Aperture Blade Oil & how to clean it