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Forum: Pentax SLR Lens Discussion
06-10-2019, 01:59 AM
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Hi all, many thanks for your responses so far.
So I took the lens to a party, where a friend noted a possible dent to the front of the lens. In addition playing with the lens in more detail it actually gets a bit stiff around 0.40 - 0.38m and then lightens up again.
I feel this is likely due to a bump in the lens' history. The issue doesn't bother me that much, and ironically the aperture ring is smooth with this copy. Optically it is beautiful.
I love this thing, and will just leave it as it is. But thanks for your measured response guys, and not just saying "ditch it and get a new one"
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Forum: Pentax SLR Lens Discussion
06-07-2019, 09:47 AM
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It's a shame that it seems that the sellers haven't had a good look at the lens mechanically. I've got a set of glasses screwdrivers and I'm planning on getting some lithium grease for the helicoid, unless someone has any suggestions as to what to get?
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Forum: Pentax SLR Lens Discussion
06-07-2019, 08:04 AM
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Hi guys, just got myself the above lens from a reasonably good seller in Cambridge, UK. They've reportedly had all vintage lenses dismantled and examined.
What I find odd is that the focusing ring on this lens gets progressively more stiff as you go from 0.40m to 0.30m. It occasionally gets a bit less stiff, it's not bumpy, and you can just about convince yourself it feels a bit grainy.
You know when you screw on a cap on a bottle and you give that last twist? Exactly like that.
I prefer NOT to replace this lens as it's quite rare to obtain and I got it for £40 when it's more like £70 on eBay.
Anyone have experience with these lenses? Do they do this normally? Any way I can take the back plate off and oil the mech myself?
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