The FotodioX M42 Pro Lens Adapter for C-Mount Cameras is a high quality adapter that allows you to mount a M42 mount lens to a C-mount camera body. It features a brass construction with a stainless steel finish as well as the ability to focus to infinity. This works with a leaf spring system for a secure attachment of the lens to the adapter.

Although the lens will fit physically, automatic lens control and functions will not operate correctly while using this adapter. You can utilize aperture priority mode in combination with stop-down metering for automatic exposure control on your camera.

Brass with Stainless Steel Finish    Focuses to Infinity    Leaf Spring System

Related Questions and Answers

Q: 1. Is there an adaptor for Leica M lenses to Nikon F mount?

A: No, M42 refers to a 42mm screw mount lens like M39 refers to a 39mm Leica screw mount lens. I am not sure what lenses use a 42mm mount, certainly not Leica.M lenses use the M bayonet mount, which is the same a Visoflex bayonet mount. You need a Leica/Leitz visoflex to Nikon F mount adapter.

Q: 2. What frame lines will it show for leica film cameras?

A: It will not bring up any frame lines but the Leica film cameras have a manual lever so you can set the frame lines. The frame lines can be changed with the lever that's on the front of almost all Leica cameras, the little frameline selector level, It will change what you see in the viewfinder. The Leica M2, for example, has 35mm, 50mm, and 90mm frame lines inside. So if you are adapting an 85mm lens, you would probably want to use the 90mm frame lines so get a close estimate.

Q: 3. Would this work with Leica Film cameras as well? (M3 and upwards)

A: Yes, this will work Leica M-mount film cameras.

Q: 4. Will this work with Pentax Super Multi Coated Takumar lenses? Pentax lenses seem to use a different M42 thread...

A: The Pentax older lenses are M42, maybe the threading is fine but M42 all the same and this adapter should work.

Q: 5. Will this adaptor allow the lenses to be mounted to Nikon DX bodies as well?

A: Yes, the adaptor allows the screw mount Lens to mate with the Nikon DX body without a problem, don't forget the camera will only operate in manual mode.

Q: 6. Hello. If the adapter has a lens 1.4x, does it mean that a Helios 58mm in a Nikon D5600 will become in a 113mm (58 X 1.4 X 1.4) (correction factor of the camera and correction factor of the adapter)?

A: If you are looking for the 35mm equivalent focal length of a full-frame lens with a native 58mm focal length used on a Nikon APS-C sensor with the FotodioX Pro Lens Mount Adapter for M42 Lens to Nikon F Mount Camera, the new equivalent 35mm focal length would be 121.8mm. Your math was close, but in your (58 x 1.4 x 1.4) equation, you mis-typed the camera's crop factor, which is 1.5x. As such, 58mm x 1.4 would be 81.2mm, which is the equivalent focal length when using the Fotodiox adapter on a camera with a full-frame sensor, and you would then multiply 81.2mm x 1.5, which equals 121.8mm, which would be the 35mm equivalent focal length when used on the 1.5x APS crop sensor found in the Nikon D5600 DLSR camera.

Q: 7. Because m42 has a shorter flange distance than f-mount, will this end up affecting focus and/or focal length?

A: IT has a 1.4x multiplier so all lenses will be 1.4x longer. The multiplier is required to achieve infinity focus.

Q: 8. Will this work with a Mamiya/Sekor f2 50mm lens? The issue is the extended post at the bottom of the lens.

A: Yes it will..there is an internal ring that will press aperture pin on M42 mount lens..depending on your lens your distance scale and such might not align in the exact center of camera...There are a few set screws you can loosen and reposition lens and re-tighten..

Q: 9. can my nikon d750 still give me focus confirmation with this adapter?

A: The short answer is no, the adapter will work optically, but there isn't any autofocus at all. On the auto focus lenses you use with your D750, you should notice electrical contacts that are absent on the lens you are trying to use with this adaptor. With no electrical connection to the lens auto-focus is not possible. That being said, the adaptor, along with the corrective lens in the adaptor will allow manual focus. I used this adaptor with a 50mm f/1.4 Takumar lens that came with my Asahi Spotmatic, and it's a terrific lens, so if your M42 mount lens is a good one, this adaptor will allow you to use it.

Q: 10. Is this the V2 adaptor that can be used with a Pancolar lens?

A: This is the V2 adapter.