Rear lens caps
Rear lens caps to 3D print
Twist-on rear caps for Canon EF, ARRI PL and Sony E. They lock like a camera bayonet, print face down without supports and can carry your focal length on the face or hide an AirTag inside.
Canon EF / EF-S
Canon EF lenses (full frame).
Free · with focal length €2.90
ARRI PL
PL-mount cine lenses from ARRI, Zeiss, Cooke, Angénieux, Sigma, DZOFilm, Laowa and others.
€2.90
Sony E / FE
Sony E-mount lenses, full frame (FE) and APS-C.
€2.90
What every cap has
- A bayonet measured from caps that fit real lenses, with a self-tightening ramp on each claw.
- Module 0.8 gear teeth like our focus rings, or a smooth flutes grip.
- Your focal length as a flush two-colour face, big enough to read in the case.
- An optional snap-in AirTag pocket: one part, no screws or glue.
- A free fit test ring per mount, so you check the bayonet on your lens before printing the cap.
More mounts such as RF, Z and L are planned. Tell us which one you need: b.see@focusrings.at.