RING-FOCUS BELT CANON 70-200mm f/4
by DrGFreeman · from Printables
Personal use only
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PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
Ring to focus a Canon 70-200mm f/4 lens using an electronic focuser (e.g. ZWO EAF) and a 3D printer belt.
