SLR lens mount

Contax/Yashica (C/Y) mount

Everything about the Contax/Yashica (C/Y): flange focal distance, native lenses, cameras and which adapters keep infinity focus.

45.50 mm
Flange focal distance
48.0 mm
Throat diameter
1974
Introduced
SLR
System type
1
Lenses in our database

Mount facts#

Mount
Contax/Yashica (C/Y)
Maker
Contax / Yashica
Type
SLR
Flange focal distance
45.50 mm
Formats
Full frame
Electronic contacts / AF
No (mechanical / manual)
Production
1974–2005

About the Contax/Yashica (C/Y)#

Home of the Carl Zeiss T* manual lenses for Contax and Yashica SLRs.

Contax/Yashica (C/Y) lenses#

1 native lenses, widest to longest.

LensFocalApertureFormatType
Zeiss Carl Zeiss Sonnar T* 180mm f/2.8 MMJ180 mmf/2.8Full frameTelephoto prime

Contax/Yashica (C/Y) cameras#

Use Contax/Yashica (C/Y) lenses on other cameras#

AdapterPossible?Flange gap
Contax/Yashica (C/Y) → Sony E-mountYes · manual+27.50 mm
Contax/Yashica (C/Y) → Canon RFYes · manual+25.50 mm
Contax/Yashica (C/Y) → Nikon ZYes · manual+29.50 mm
Contax/Yashica (C/Y) → Fujifilm X-mountYes · manual+27.80 mm
Contax/Yashica (C/Y) → Micro Four ThirdsYes · manual+26.25 mm
Contax/Yashica (C/Y) → L-MountYes · manual+25.50 mm
Contax/Yashica (C/Y) → Canon EF-MYes · manual+27.50 mm
Contax/Yashica (C/Y) → Fujifilm G-mountYes · manual+18.80 mm
Contax/Yashica (C/Y) → Hasselblad XCDYes · manual+27.36 mm
Contax/Yashica (C/Y) → Nikon 1 (CX)Yes · manual+28.50 mm
Contax/Yashica (C/Y) → Pentax QYes · manual+36.30 mm
Contax/Yashica (C/Y) → Samsung NXYes · manual+20.00 mm
Contax/Yashica (C/Y) → Canon EFYes · manual+1.50 mm

Adapting basics#

A lens can be adapted with simple tube spacers when its flange distance is longer than the camera's. With 45.50 mm, Contax/Yashica (C/Y) lenses can in principle go on bodies with shorter flanges such as Praktica B, Canon EF, Canon EF-S, Sigma SA, M39x1, Kiev Automat. Bodies with this mount can take lenses from longer-flange systems such as Leica R, KMZ Zenit DKL-mount, Contax N, Tamron Adaptall, Arri PL, Leica S, T-mount (T2), Mini T-mount.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources