RIX RNV-31/J-31 IRIS Adapter (25mm-30mm step up)
Thread adapter from 25mm (I think) to 30mm.
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May 20, 2025
Description
PDFYou have to take the retaining ring off the front lens to thread this on. I also have a model for a tool you can print to help get it off.
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The author marked this model as their own original creation.