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05-06-2010, 09:47 AM   #1
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Yet another ugly downside to LBA

You can imagine the other problems, even if you avoid LBA: the cost, the storage, the pile of boxes you have to recycle, etc. No one talks about what it can do to your camera:



Looking forward to wearing out my K-7!

05-06-2010, 10:31 AM   #2
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That would be one good thing about lenses with plastic mounts.
You've probably realized it, but I would suggest trying to clean all the lens mounts. I try to do it regurarly, at least wipe them off. Don't have that amount of lenses, though. :P
05-06-2010, 11:21 AM   #3
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I think that's caused by installing a knock-off m42/K adapter too frequently.
05-06-2010, 12:59 PM - 1 Like   #4
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I have a couple of lenses that "mount rough" and I a bit concerned about damaging one or more of my camera bodies. The hard part is finding the source of the "roughness".


Steve

05-06-2010, 02:31 PM   #5
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Just spray it with some WD-40.






05-06-2010, 02:39 PM   #6
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QuoteOriginally posted by stevebrot Quote
I have a couple of lenses that "mount rough" and I a bit concerned about damaging one or more of my camera bodies. The hard part is finding the source of the "roughness".


Steve
I almost always have a film body around with no market value, that I'm not afraid to test a lens on. (Apologies to those who love all cameras independent of value.) If a lens doesn't feel right, I'll experiment with a file and the old cameras until it works better. The Cosina 55mm f1.2 was a rough lens. I got it used but its mount looked perfectly new; I don't know why it didn't fit right.

I now think the groove in the mount leading up to the screwdrive could be the "Ricoh" pin on my Sigma 24mm f2.8 Superwide II. I got this lens a long time ago and may not have noticed it was different. It has never gotten stuck, but when I loaned it to a forum member, he noticed the extra drag from mounting it immediately. Maybe I was wrong to reassure him. The other possibility is a loose mount screw on something.

The wear inside could be from cheap M42 adapters. I have plenty. It wouldn't be my first guess because my worst-fitting cheap adapters are not harder than the mount, and I don't use them that often.

I do look at and clean all my new lens acquisitions, because the *ist DS sensor is a dust magnet. I don't like to bring any more foreign material into the mount than is already rattling around in there.
05-06-2010, 03:03 PM   #7
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QuoteOriginally posted by stevebrot Quote
"mount rough"
This phrase makes me snicker like a 14 year-old.
05-07-2010, 03:05 AM   #8
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QuoteOriginally posted by Just1MoreDave Quote
I almost always have a film body around with no market value, that I'm not afraid to test a lens on. (Apologies to those who love all cameras independent of value.) If a lens doesn't feel right, I'll experiment with a file and the old cameras until it works better. The Cosina 55mm f1.2 was a rough lens. I got it used but its mount looked perfectly new; I don't know why it didn't fit right.

I now think the groove in the mount leading up to the screwdrive could be the "Ricoh" pin on my Sigma 24mm f2.8 Superwide II. I got this lens a long time ago and may not have noticed it was different. It has never gotten stuck, but when I loaned it to a forum member, he noticed the extra drag from mounting it immediately. Maybe I was wrong to reassure him. The other possibility is a loose mount screw on something.

The wear inside could be from cheap M42 adapters. I have plenty. It wouldn't be my first guess because my worst-fitting cheap adapters are not harder than the mount, and I don't use them that often.

I do look at and clean all my new lens acquisitions, because the *ist DS sensor is a dust magnet. I don't like to bring any more foreign material into the mount than is already rattling around in there.

definately the ricoh pin. I had a Ricoh "P" 50mm and put it on my camera once. I noticed that it scratched the camera mount (exact place as on your picture), so i got rid of the pin first before putting it on my camera again.

05-07-2010, 03:14 AM   #9
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QuoteOriginally posted by aerodave Quote
This phrase makes me snicker like a 14 year-old.
I must be getting past it... made me think of hiking through the Himalayas
05-07-2010, 04:17 AM   #10
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A justified excuse to purchase more bodies!
05-07-2010, 05:23 AM   #11
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with My K10 still often find little pieces of metal in the camera mount, I would just brush them off....I still don't know where the hell they are coming from.
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