Oil on aperture blades - so what?

Started Mar 16, 2013 | Questions thread
zink
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Re: Oil on aperture blades - so what?
In reply to Thamnophis, Mar 17, 2013

It is not a big problem when you use the lens on a NEX. It does not matter if the blades are slow. The problem is, the oil will become more sticky over time or during cold weather (when you use it outside). Then, you will not be able to stop it down.

But this type of lens can be cleaned very easily. If you have the right tools, remove the front parts of the lens and remove the complete diaphragm mechanism. You can screw it apart, remove a tiny spring and clean the blades with alcohol. When everything is nice and clean, reassemble it. Beware of dust! Never disassemble the back of the lens. Then it will become very complicated to reassemble it.

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