Xem Studiomeasured geometryLibrary › Cameras & lenses › Lens mounts & filter threads ·
Micro Four Thirds mount: 19.25 mm flange focal distance
What is the Micro Four Thirds flange focal distance? · Standard part · basis: Published numbers only (sources per row); no bayonet geometry is published, so no file
Also called: mft flange distance, micro four thirds flange focal distance, m43 mount dimensions, mft 19.25
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 3 in table
Notes
- Flange focal distance is the distance from the mount's reference face to the image plane; adapters and extension tubes must add exactly the difference between two mounts' flange distances to keep infinity focus.
- No file: the bayonet's lug widths, angles, depths and locking geometry are not published by the maker, so nothing is drawn. Only the published numbers are given.
Micro Four Thirds mount: 19.25 mm flange focal distance size chart
| parameter | value | from |
|---|---|---|
| flange focal distance | 19.25 mm | Flange focal distance table |
| throat / inner diameter | not published by the maker in a source I could verify (left out) | — |
| coupling | bayonet | — |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Flange focal distance (table of mounts) | web | CC BY-SA 4.0 (text); dimensions are facts |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=micro-four-thirds-mount
Questions
What is the Micro Four Thirds flange distance?
19.25 mm.