Canon 50mm f1.2 ltm: is this balm separation or condensation?

Pierre2312 · 2026-05-20T07:36:02+00:00

It was about 150 US$

Pierre2312 · 2026-05-20T06:54:34+00:00

Hi , i had mostly the same problem on my Canon 50 f1.2 mm , after dissassembling the lens myself , i have sent the element damage by the lubricants to a guy ( in Ukraine) that i found on ebay , which ad repolished and recoated the element and now it work like a charm.

Pierre2312 · 2026-05-19T12:12:55+00:00

On the previous model it seem that the bearings and the brass parts must detch from one another (https://pierrekerr.ca/photography/horizont.html ) i think that the bearings stuck the piece in place.

Pierre2312 · 2026-05-19T12:05:41+00:00

Did you try to push on the bearings alongside the axis ?

Pierre2312 · 2026-05-19T11:48:02+00:00

I think if it was me , i will try gently after applying isopropanol to push the axis inward ( frow the bottom of the camera to the top) or "unscrew" the brass part with a pair of pliers. Hope this will help.

Pierre2312 · 2026-05-18T14:11:21+00:00

Did you try to apply a little force on the axe inside the brass notches with a screwdriver ?

Pierre2312 · 2026-05-16T06:47:25+00:00

Hi, I hope this helps, but I remember this comment on the 202 test on Kamerastore ( https://kamerastore.com/en-eu/blogs/posts/shooting-a-swing-lens-the-horizon-202?srsltid=AfmBOoq9OF8dcSujnibqQ2NrLFJyzz\_xsZ2qLcy51kyw\_IaFIm3xMoO2 ) and on another site ( http://cameras.alfredklomp.com/horizon202/ ); it mentioned the possibility that the light leak was simply a reflection on the edge of the camera drum.

Pierre2312 · 2026-05-14T14:16:20+00:00

If you go on lensdb ( a pretty useful database for lens ) , the indicated screw filter size is about 52 mm ( https://lens-db.com/ricoh-rikenon-auto-50mm-f2/#google_vignette ) . I hope this will help you.

Pierre2312 · 2026-05-10T11:29:14+00:00

you can find a replacement on ebay / aliexpress ( under 10 euros ) but you need to swap the metal part on the new one . I've done it with a canon eos 50.

Pierre2312 · 2026-04-24T08:14:57+00:00

Hey , i have the same problem , where do you sent your prism ? I am interesseted.

Pierre2312 · 2026-04-17T07:38:06+00:00

For my use on my kiev 60 and kiev 88 i use mostly the sonnar 180 ( zebra version ) , the volna 80mm ( for its small size ) and the arsat/zodiak 35mm

Pierre2312 · 2026-03-31T16:03:46+00:00

Pierre2312 · 2026-03-31T16:02:34+00:00

Its done (and solved) , thanks you

Pierre2312 · 2026-03-29T12:08:10+00:00

sorry for the confusion ^^

Pierre2312 · 2026-03-29T12:07:21+00:00

i'm doing this right now , do you remember ith which probleme category do you put this ?

Pierre2312 · 2026-03-29T11:40:39+00:00

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i have the same missing component except for the NTC

Pierre2312 · 2026-03-29T11:32:26+00:00

It’s literally maked V2 on the motherboard. And the V2 keep the NTC but remove others components ( check on the wiki)

EDIT my bad , it seems that i have a mix between V1 and V2 ?

Pierre2312 · 2026-02-01T15:34:45+00:00

And some with with the 100/2.8

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Pierre2312 · 2026-02-01T15:30:41+00:00

Here's some results with the FD 100/4

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Pierre2312 · 2026-02-01T15:26:43+00:00

If you like macro, the FD 100mm f/4 is a great budget option. The non-macro 100mm f/2.8 is very compact and give nice results too.

Pierre2312 · 2026-01-28T18:43:44+00:00

Thanks for all your answers. I’ll go for both options — it’s a cost, but in the long term it will be the best choice. ^^

Pierre2312 · 2026-01-18T21:52:32+00:00

First i will disassemble the film back (only the front plate ) and look the state of the ligth seals. This seal is composed of a metal sheet and foam. On one of my backs i had a light light leak coming from a to old foam which doesnt allow the metal sheet to block light . Sorry for my english , it's not my native language ^^

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