17.53 mm
Flange focal distance
25.4 mm
Throat diameter
1926
Introduced
Cine
System type
0
Lenses in our database
Mount facts#
- Mount
- C-mount
- Maker
- Industry standard
- Type
- Cine
- Flange focal distance
- 17.53 mm
- Formats
- 16 mm / small sensors
- Electronic contacts / AF
- No (mechanical / manual)
- Production
- ~1926–
About the C-mount#
Cine and CCTV thread mount; covers 1-inch and smaller sensors.
Adapting basics#
A lens can be adapted with simple tube spacers when its flange distance is longer than the camera's. With 17.53 mm, C-mount lenses can in principle go on bodies with shorter flanges such as Nikon Z, Pentax Q, Samsung NX mini. Bodies with this mount can take lenses from longer-flange systems such as Micro Four Thirds, Canon RF, L-Mount, Samsung NX, Fujifilm G-mount, Pentax Auto 110, Chaika, Leica M.
Sources & licences#
- Wikipedia: Flange focal distance — CC BY-SA 4.0
- Lensfun mount compatibility data — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources