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ko-120mm 120mm f1.8 Question
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PostPosted: Sat Feb 05, 2022 5:45 pm    Post subject: ko-120mm 120mm f1.8 Question Reply with quote

Hi Everyone:

I am trying to figure out the filter thread size for the ko-120mm 120mm f1.8. The only information I can find is indicated in Russian. I think it is either 62.5mm or 68mm if I had to guess from the specs below. If anyone can read Russian I would appreciate you enlightening me. Thanks for your help.

-Charles




PostPosted: Sun Feb 06, 2022 8:33 pm    Post subject: Reply with quote

Anybody? Smile

My (Google Translate) Russian is rusty; Filter translates to Фильтр which I don't see on image of specification sheet.


PostPosted: Fri Feb 18, 2022 10:05 pm    Post subject: Reply with quote

Oh! Sorry, this one is all me, I only just found this thread!

The front filter thread is 72mm, and will accept normal filters/rings/hoods. 62.5mm is the rear outer diameter of the barrel. Inner diameter of the rear is 60mm with a female thread.

I posted a thread about adapting mine to EF mount with some different schematics with additional dimensions (but still not the front filter thread diameter, that I simply found by screwing on a step-up ring). http://forum.mflenses.com/lomo-ko-120m-120mm-f-1-8-russian-projector-lens-t83306.html