The Fotodiox M39 Metal Screw-On Body Cap is a silver anodized aluminum that is anti-rust and crush resistant. The body cap is compatible with M39 and L39 screw-on camera mounts, which prevent debris or dust from entering the camera chamber.

Compatible with M39/L39 Camera Mounts    Silver Anodized Aluminum    Keep Debris & Dust Outside the Chamber    Anti-Rust and Crush-Resistant Cap

Related Questions and Answers

Q: 1. Is this supposed to place my m39 lenses upside down when attached to my camera body?

A: No, when using the FotodioX Mount Adapter for M39/L39-Mount Lens to Fujifilm X-Mount Camera one is not supposed to mount the lens upside down.

Q: 2. Does this adapter allow the M39 lens to engage the rangefinder mechanism of a M mount Bessa?

A: Like the other fellers said. Works just as intended.

Q: 3. Will this fit my X-pro 1

A: Yes, this Fotodiox M39-FXRF adapter will fit the Fujifilm X-Pro 1.

Q: 4. Will this vignette on a Nikkor z 40mm f2 with a UV lens protector?

A: No, there is no vignetting when attaching the Zuma 52mm Standard Screw-In Metal Lens Hood to the Nikon NIKKOR Z 40mm f/2 Lens on a full-frame camera body. You can mount the lens hood on top of the lens filter.

Q: 5. Can this magnetic cap be used with the Sigma 45 2.8 lens? I believe it would fit, but since it's magnetic, I'm wondering if it might damage the 45 somehow.

A: The Sigma LCF5501M Magnetic Metal Lens Cap is compatible with all Sigma I series lenses with 55mm cap diameter. But it is not compatible that one specific Sigma I series lens, the 45mm F2.8 DG DN | C lens.

Q: 6. Is this for rangefinder ltm lenses or the soviet slr lens that have a 39 thread?

A: According to our sources, all LTM M39/L39-mount lenses can be use with this adapter.

Q: 7. I have a BMPCC 6K Canon EF mount and I would like to attach a Jupiter 8 L39 Lens will this adapter work?

A: While not aware of a specific test done on the combination this is an EF lens to L39 adapter. It should work.

Q: 8. will this allow connection of L-39 threaded lens (Nikon enlarger lent) to Sony A7r4?

A: Yes.

Q: 9. Is this supposed to mount my m39 lenses upside down on the body?

A: No, when using the FotodioX Mount Adapter for M39/L39-Mount Lens to Fujifilm X-Mount Camera one is not supposed to mount the lens upside down.

Q: 10. Will this focus to infinity ? If not how close ?

A: Yes this adapter will allow focus to infinity.