Sony E Mount Conversion for Meike / Neewer / Jaray 35mm f/1.7 / f/1.6

thingiverse

This is a mount conversion kit (or replacement) for affordable APS-C / MFT all-metal manual focus 35mm f/1.7 (or f/1.6 depending on marketing labels) prime lenses that are branded Neewer, Meike, and Jaray (there are probably others - chances are good if they look identical externally). You may use the original lens mount's screws. I used this same part to convert both a MFT Jaray and a Fuji X Meike to compare them. The flange distance was different between the two samples, this may be due to manufacturing variations or due to MFT's cover glass thickness. Infinity was nearly spot-on for the Fuji version; the MFT version focused well beyond infinity. At closer focus distances, these lenses are capable of providing enough sensor coverage for a square crop on full-frame. Printing the bayonet tabs with supports is recommended but not completely necessary (the tabs will look a bit uglier but printing with or without both provided a good fit to my cameras. The bayonet is threaded internally for a bit of baffling. There are some pretty tight tolerances on this part, so it will be crucial to ensure your printer is spatially and dimensionally accurate/consistent beforehand.