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L39/M43 adapters are not accurate


Henchman
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So, I realised yesterday while working on the setup for my anamorphic lens on my BMPCC 4K, that THE passive L39 and m42 to mft adapters are off. 

When using an EF adapter, then a speedbooster, focus to Infinity was fine on the m42. 

When using the passive mft adapters, it was off. 

I printed 2 rings one for the m42 that was. 0.5mm thick. The other for my jupiter lens that is L39 to mft that is 0.02mm. 

Both focus great now. 

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  • 1 year later...
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Hello, I have an L39 Leitz Telyt 1:4.8/280 lens that I've been trying to adapt to my BMPCC 4K, but the adapters I have been using have faced a similar problem of being the wrong distance from the sensor. You wouldnt happen to have the printing specs for the 0.02mm ring would you? Thank you for posting this! 

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