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05-24-2010, 09:25 PM   #1
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Cleaning Lenses and Mount

I was cleaning one of my older lenses the other day and found that around the mount there was small amount of black greasy residue. I cleaned it off, but the thought occured to me that maybe the grease was there for a reason.

Is there supposed to be a small amount of grease on the mount on lens or camera body? Is this typical if the lense mount has not been cleaned for a while?

Thanks for the help.

05-24-2010, 09:38 PM   #2
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This is quite typical, but it's only good if you clean it. There's no need for any lubrication around the mount area, as there is no movement while the lens is latched.

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05-24-2010, 09:38 PM   #3
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I noticed the black residue also recently and passed it off as fine metal grindings from the constant mounting of lenses. Grease does not sound like what i want on the electrical contacts so I keep the mounts clean.
06-01-2010, 08:51 PM   #4
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A good electronics cleaner, such as "Blue Shower", sprayed onto a rag, is a very good method for cleaning lens and body mounts. Spraying the mount is not a good idea, as the overspray cannot be controlled. This will also keep the electrical contacts clean for new and old lenses.

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