About yukosteel


Thanks for visiting, this portal - is my hobby driven contribution to extend photo community knowledge related to photographic equipment (especially maintenance and repair areas).

I’m happy to chat about photography, lens disassembly and improvements. If you have question or challenge – send me some details or pictures to yukosteel@gmail.com, I’ll be glad to help. In many cases I was able to help people remotely through conversations to finish their repair projects.

Most articles are focused on disassembly guides, though there are also lens reviews, DIY projects, repairs and various modification.

Sometimes I'm also performing free of charge repairs for interesting lens failure cases (mostly mechanical), that could lead to a good knowledge sharing article. If you think you have an interesting case of broken lens that could be repaired mechanically - send me a message with details.  

I'm currently located in US so take that into account while considering shipment cost (which I often split though).

You can also find me active on following resources:

Yuri (yukosteel)


  1. Hey, do you think it's possible to access the center element of the viltrox 85mm f1.8 II for fingus cleaning? Either through accessing it at the mount or front element?

    1. Hi Sergio, I wish could help you with this quesiton, but I didn't have chance to work with Viltrox 85 f1.8 II. However if you send me some pictures to yukosteel@gmail.com of how it looks during your disassembly attempt, I'll be glad to provide feedback and possibly hints how to access inner glass surfaces. Most common situation is to see moisture with fungus appearing in aperture chamber, but each lens is unique and needs closer investigation.

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