Sankyo Koki W-Komura 35mm 2.8 LTM
Old 09-13-2016   #1
bakemono
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Sankyo Koki W-Komura 35mm 2.8 LTM

A few weeks ago, while my camera was away for repairs, I grabbed this lens on eBay.



There was not a lot of info around and the price was not low either, so I was kind of taking a chance with it.
The images that I did found, looked great, with tons of 'vintage' character. By that I mean vignetting and the background swirl when wide open and strongish field curvature.

Yesterday I finally got my camera back, and couldn't wait any longer to test the lens

I must say, I am more than satisfied with it, hard to imagine a 35mm lens that would fit me better.

When wide open, the background looks great. (Slightly missed focus in the first one)





When closed up a bit it is tack sharp, still has a bit of a swirl.





Next ones are at f5.6





And finally at f8, it's nice and sharp across the whole frame. The corners are a bit worse than modern lenses, but to me that's not a drawback at all.







The only annoyance that I found was that the front part together with aperture ring rotates when focusing. It makes setting aperture a bit more difficult, having to hold the focus in place and moving aperture ring at the same time.

When I got the lens, it had quite a bit of shiny dust inside and the focus was very stiff.

I opened it for cleaning and lubrication, which went without a hitch. It was interesting to see that the inner parts had lots of 'random' holes drilled in them as well as the focusing stop looked like a hand-made replacement instead of the original factory part. It makes me wonder what life has this lens lead, to have so many repairs done to it.
Still works like a treat, so I hope it has some years left

Does anyone else have any photos taken with this lens that they would like to share?
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Old 09-14-2016   #2
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I have the 35/3.5 variant, which I'm quite happy with. Of note is that I saw the same seemingly extraneous, randomly placed holes on some interior parts. Must have been part of their manufacturing process, though I'm at a loss as to determine a purpose.
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Old 09-14-2016   #3
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For a while the Komura-made lenses were in pretty high demand, but recently they have come down again. Which I am very happy with as their image quality remains unaltered, high!

Here's a nice article which lists a lot of lenses in various guises and with their respective characteristics http://www.johanniels.com/index.php/...enses-overview
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Old 09-14-2016   #4
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Interesting to hear about holes in other komura lenses. Now it seems that it might be some part of manufacturing process - maybe for fixing the parts to something for machining.

Thanks for the link - very nice information for someone who is interested in these lenses.
I wonder why they never made any 50mm lenses?
Maybe that was because everyone already had a 50mm lens as part of their kit when buying a camera, so they banked on people being more likely to buy focal lengths they didn't already have?
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Old 09-14-2016   #5
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Are Komura SLR lenses of similar quality as the RF ;enses?
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Old 09-14-2016   #6
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Good question - I just bought a cheap m42 35mm f2.5 lens
Will report back with the results once it arrives
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Old 09-14-2016   #7
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Exactly. I nearly bought such a lens last night.
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Old 09-22-2016   #8
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Just love using this lens. Very solid build and great images.














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Old 10-04-2016   #9
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Let's continue, shall we?
Here are some shots taken with this lens from the most recent roll.

I still haven't developed anything from my m42 komura lens, it came with a host of problems - stiff as a rock, incorrectly reassembled by someone, missing clickstops, broken screws, etc. I managed to get it more or less in working condition, but the film is not yet done.
It does seem less well built than the ltm lenses.













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Old 2 Weeks Ago   #10
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This lens is a drama queen. If there is none, it will surely create some when you open up the aperture.
















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Old 2 Weeks Ago   #11
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BTW the m42 komura was a bust.
It was crap mechanically, and had a decentered element, as one side of images was always blurry, even when I got it working.
Not to mention the completely generic pictures and lack of the beautiful 3d effect the ltm version has.
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Old 1 Week Ago   #12
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But I can see why you decided to keep the LTM 35mm lens!

I've owned quite a few over time and have downsized my camera herd substantially, with now one Leica II and three lenses 35-50-90. If I hadn't owned a Canon 2.0/35mm, I would still have my (probably Komura-made) Kinegon 2.8/35mm. The Komuras are very nice lenses
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Old 1 Week Ago   #13
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Quote:
Originally Posted by bakemono View Post
This lens is a drama queen. If there is none, it will surely create some when you open up the aperture.

Beautiful lens! Sharp wide open in the centre and stopped down. Has a cosy signature. Can't see anything wrong.
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Old 1 Week Ago   #14
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Oh boy, I used to have a very similar model of this lens. Today I could kick myself for selling it.
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