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FotodioX Pro Lens Mount Adapter for Contax/Yashica Lens to Canon EF-Mount Camera

BH #FOPCEACY • MFR #CY-EOS-PRO
13 reviews
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FotodioX Pro Lens Mount Adapter for Contax/Yashica Lens to Canon EF-Mount Camera
Key Features
  • Contax/Yashica Lens to EF-Mount DSLR
  • Maintains Infinity Focus
  • All-Metal Construction with Brass Mount
This Pro Lens Adapter from Fotodiox enables the use of your Contax/Yashica lenses on Canon EF-mount DSLR cameras. It features a durable brass construction with stainless steel finish, a leaf spring ensures a secure connection between the lens and adapter, and its design also maintains infinity focus.
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FotodioX CY-EOS-PRO Overview

This Pro Lens Adapter from Fotodiox enables the use of your Contax/Yashica lenses on Canon EF-mount DSLR cameras. It features a durable brass construction with stainless steel finish, a leaf spring ensures a secure connection between the lens and adapter, and its design also maintains infinity focus.

This manual adapter does not maintain automatic lens control between the camera and lens; aperture priority or manual shooting modes should be used, as well as stop-down metering for exposure control.
It is not recommended to use this adapter with the Contax/Yashica 18mm f/4, 85mm f/1.2, or 135mm f/2 lenses in conjunction with Canon EOS 5D-series DSLRs.
UPC: 812759010069

FotodioX CY-EOS-PRO Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Canon EF Mount
Lens Compatibility
Contax/Yashica Mount
Electronic Communication
No
Included Shims
Materials
Brass
Packaging Info
Package Weight
0.1 lb
Box Dimensions (LxWxH)
3.2 x 3.15 x 0.65"

FotodioX CY-EOS-PRO Reviews

Fantastic build quality with excellent tolerance

By Joe
Rated 5 out of 5
Date: 2025-10-06

I'm picky when it comes to even the overlooked accessories like lens mount adapters. I'm always willing to pay a little extra for better materials like brass vs aluminum, etc. Sure you can find cheaper C/Y to EF adapters but there's something to be said about using a product with wonderful build quality.. it not only performs better but it just psychologically feels better as well haha. Big fan of the FotodioX Pro line of lens mount adapters. I am happy to report that there is basically zero wiggle with this specific C/Y to EF adapter on both the lens side as well as the camera mount side. Even when compared to my Leitax EF hard mounted Contax Zeiss lens it behaves exactly the same. So much so that I decided to save money and not get my other Contax Zeiss lenses Leitax EF modded since I will just be using these adapters instead. My biggest grip with adapting lenses in general is dealing with adapters with loose tolerances.. I do not like having considerable play when a lens is mounted on the body - it reminds me every time that I am not using a native lens and it just feels downright sloppy. Kudos to brands like FotodioX with their attention to detail and putting thought into even the most basic of accessories.

No problems

By Benjamin
Rated 4 out of 5
Date: 2019-01-02

It does what it says it does.

See any errors on this page?

Can this be used to mount a Contax to EF t then ...

Can this be used to mount a Contax to EF t then mount neon speedbooster EF to MFT??
Asked by: Chris
yes you can mount it.
Answered by: stuart e
Date published: 2020-01-13

question

Will this work with my Kiev Contax Jupiter-9 85mm lens?
Asked by: Wes L.
Unfortunately this will not work with a Contax Jupiter lens, as the lens mount is completely different.
Answered by: James B.
Date published: 2018-08-28

Will this work with the canon EOS 1? Thanks

Will this work with the canon EOS 1? Thanks
Asked by: Leo
It will be all manual focus, but this will allow you to mount Contax/Yashica lenses to the Canon EOS 1.
Answered by: Kevin
Date published: 2020-12-15

question

Does it support canon 6D?
Asked by: Anonymous
Hola ! Respecto a las 6 D y este adaptador : Si usamos uno de los lentes no recomendados por el fabricante del anillo para la 5D por ejemplo el 135 mmm 1:2,8 creen que el espejo de la 6D puede tener roce?
Answered by: Marcelo R.
Date published: 2018-08-28

question

I have a Contax NX with two Zeiss lens: 1) T* Planar 1.4/50mm, and 2) T* Vario-Sonnar 3.5 - 4.5/70-200mm. Will this adapter work with these lens to a Canon EOS 7D?
Asked by: STEPHEN
The Contax NX has the Contax N-Mount, which is different from the Contax/Yashica (C/Y) mount. Unfortunately, this adapter would not be compatible with your lenses, nor do we have an adapter that would mount N-mount lenses on a Canon EOS body.
Answered by: Christina S.
Date published: 2018-08-28

question

Will this adaptor work with Carl Zeiss Contax Distagon T* 28mm f2 and a 5Dsr?
Asked by: Daniel P.
HiI purchase the adapter and it does work to hook up my old lenses to my new camera. I was thinking about returning it since I may not need to use one of my old lens.
Answered by: Geoff K.
Date published: 2018-08-28

question

I recently purchased a fotodiox c/y to canon eos adapter and am very pleased to use my zeiss 2.8/28 lens with my canon 20d; however, I'm unable to get the adapter off the lens to use with my 80mm zeiss lens. Can you give any suggestions on how I can remove it, or is this permanent, and I have to buy another adapter for another lens?
Asked by: Anonymous
It is best to have an adapter for each lens. However if you use a strong fingernail or small flat screw driver, there is a little clip which holds the adapter firm, by moving back a bit you can then turn the adapter off .Hope this is helpful!
Answered by: Gregory W.
Date published: 2018-08-28

question

It supports the T1i why not the T5i?
Asked by: Anonymous
The adapter works on my xti and my t5, in both manual and aperture priority. I believe it should work for the t5i. Good luck!
Answered by: Curt N.
Date published: 2018-08-28
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