The Pro Lens Mount Adapter for Contarex-Mount Lens to Canon EF-M Mount Camera from FotodioX allows a Contarex-mount lens to be used with a Canon EF-M mount camera. It is designed to support focusing to infinity, and is constructed from brass and an aluminum alloy along with a stainless-steel lens mounting ring to provide a durable, yet lightweight camera-to-lens connection.

This adapter does not support electronic communication between an attached camera and lens. To control the amount of light that enters a Canon EF-M mount camera when using this adapter and a Contarex-mount lens, an aperture-control ring is built into the Pro Lens Mount Adapter. This control ring couples with the lens's aperture mechanism so that adjustments to brightness as well as depth-of-field can be made. It features clickless stop adjustments to help prevent unwanted noise from being recorded while capturing video with sound.

Contarex Lens to Canon EF-M Body    Supports Focusing to Infinity    Brass and Aluminum-Alloy Construction    Stainless-Steel Lens Mounting Ring    Clickless Aperture-Control Ring

• Allows a Contarex-mount lens to be used with a Canon EF-M mount camera
• Attached lens can focus to infinity
• Brass and aluminum-alloy construction with stainless-steel lens mounting ring for durability
• Integrated, clickless aperture-control ring

Related Questions and Answers

Q: 1. Will this adaptor work with a mamiya-sekor 55mm f1.4?

A: Yes. It will allow connection of the lens. Functionality will be limited to manual focusing and depending on the camera, manual or aperture priority exposure only with no information or meta data transfer.

Q: 2. I have a 5D Canon and an EFS 17-85 MM lense. Will this adaptor allow me to use the lense with my 5D Canon, as I read your product statement it will. can you please advise. Rory

A: The Canon EOS-Mount Lens to Canon EOS M-Mount Camera adapter would be for adapting Canon EF/EF-S lenses onto Canons M Mirrorless cameras. This adapter would not let you use EF-S lenses on a full frame camera. Im not aware of an adapter on the market that would allow you to mount EF-S lenses on a full frame camera such as the 5D. Even if you were to find one, the image circle of an EF-S lens will not cover the entire sensor.

Q: 3. What is the maximum aperture of this unit? Are the marks indications of 1/3 stops or do they just serve as a rough guide?

A: The maximum aperture will depend completely on the lens you are using. It offers a built-in clickless iris which allows you to use your lens with some exposure control. There are 9 settings, however they act as a rough guide and how many stops they represent will again depend on the lens.

Q: 4. does this adapter work on the Canon M50?

A: I called Fotodiox and unfortunately, this adapter only works with the Canon M50 in MANUAL mode. It will not communicate any electronic auto functions to the lens. They have not developed a lens for the M series that will do that.

Q: 5. Will this adapter works with Zeiss Compact Prime CP.2 - EF Mount? Thanks.

A: It will work with any EF mount lens.

Q: 6. Can the tripod adapter be removed? This is because I need to use this adapter in an U/W housing

A: No, the tripod mount is not removable when using the FotodioX Canon EF / EF-S Mount Lens to Canon EF-M Mount Camera Pro Adapter, but the Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses, does have a removable tripod mount::https://bhpho.to/2gPv5mm

Q: 7. I have a Rebel T6. Will the lens that camera work on the M50 mark II with the adapter?

A: An EF-S lens originallly used on the Canon Rebel T6 will work on this Fotodiox adapter for use with a Canon EF-M mount mirrorless camera.

Q: 8. I am about to put my Rokinon Cine Primes on my Bolex H16 and shoot some Tri-X 200 asa. Has anyone tried this? Is there a calculation for setting exposure to adjust for using the c mount to eos ef Canon adapter? If no one responds I will be happy to post my results.

A: The iris on this adapter is not needed for use with manual lenses like the Rokinons. You just use the manual iris on the Rokinon lens while leaving the iris of the adapter at its widest opening. The adapters iris is meant to compensate for loss of the iris control of a Canon EOS EF lens. Now in the digital world you could just set this up and see the effect of the adapter iris immediately on screen. However, since you are shooting film, we suggest doing what a professional would do before principal photography and that would be to shoot an exposure test. (there is no available exposure calculation chart for this adapter.) Line up a shot of a person holding a grey card plus a notation of what the f/stop is that you have determined by using a light meter. You can use a clapperboard or a clipboard to display the card and the f stop. (Do yourself a further favor and have it held steady in the frame held by a grip stand.) I would shoot at a variety of f/stops so that I would know what was happening if I was to shoot at those f/stops. As you can see, we strongly suggest sacrificing a roll of film this way so that you know you are getting correct exposure once you start shooting for real.

Q: 9. Does this adapter work on M6?

A: Pretty sure it will. I have the M10 and it is basically the same camera.To expand creative opportunities, the EOS M6 camera is compatible with both EF-M lenses designed specifically for the EOS M series of digital cameras, as well as the full line of Canons EF and EF-S lenses^^. This gives you access to a huge variety of lenses from prime to wide-angle that are respected by enthusiasts and professional photographers from around the world. Other compatible EOS accessories include Speedlite flashes, Speedlite Transmitters and even Macro Ring Lites, so you can be ready to get the shot no matter the lighting conditions.The EOS M6 camera can also add an optional external viewfinder for enhanced usability. The Electronic Viewfinders EVF-DC2 and EVF-DC1 let you check image framing and picture settings while keeping the camera close to your body for steady shooting.Canon EOS M6: Intuitive & Versatile OperationEquipped with sophisticated operation derived from generations of EOS cameras.^^ Mount Adapter EF-EOS M is required when using EF/EF-S lenses for EOS M series digital cameras.

Q: 10. Do Canon EF-S lens also fit on this adapter?

A: Sorry no, a EF-S lens will not work with this adapter. I suspect it is because the rear glass element of the lens will hit the aperture blades.