Cleaning Lenses and Mount

noVICE · 05-24-2010, 09:25 PM

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.

Adam · 05-24-2010, 09:38 PM

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.

imtheguy · 05-24-2010, 09:38 PM

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.

dawsonjm · 06-01-2010, 08:51 PM

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.

05-24-2010, 09:25 PM	#1
noVICE Senior Member Join Date: Aug 2009 Location: Brisbane Photos: Gallery Posts: 164	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
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	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. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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05-24-2010, 09:38 PM	#3
imtheguy Site Supporter Join Date: Mar 2009 Location: Virginia Beach Photos: Gallery \| Albums Posts: 2,950	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
dawsonjm Senior Member Join Date: Sep 2007 Location: Boardman, Oregon Photos: Gallery Posts: 106	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.