Quick snap camera lens adapters for CMF Phone 2 Pro

Designed to be used without an Universal cover or TPU case. Could be a bit tight so feedback is appreciated.

Better print the fully closed one and in black. Brim could help if you have bed adhesion problems. Don't change the orientation. Don't choose the version “with Universal cover” if you don't have the cover.

The size means a metrical thread. It's usually written on a lens (i. e. M37).

I think there is no point going beyond 52mm as the adapter won't be fully closed and it'll also block a power button of a phone.

Planned future imrovements (by request):
- Adapters: 55, 58, 62 mm
- Flashlight diffuser for illuminated macro photography and video
- Double-diameter version (stock 18mm and a bigger one) OR
- Multi-diameter universal all-in-one adapter (18 / 37 / 49 / 52 mm)
- Magnetic version specifically for the Universal cover
- TPU case compatible version
- Spring-like thread holder

Changelog:
2025_06_13 Initial release (18 / 37 / 49 / 52 / 67 mm) and fixes

2025_06_14 Added adapters compatible with an Universal cover (18 / 37 / 49 / 52 mm) and fixes