N°100930 · Family detail
SigmaZoom·CANON FD mount
Sigma 28-70mm F/2.8-4 UC
Specifications01
Summary02
Sigma UC 28-70mm zoom lens for Canon FD mount, with variable maximum aperture from f/2.8 to f/4. Intended for general-purpose photography across wide-to-short-tele ranges.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Canon FD mount has a flange distance of 42 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- FD lenses stay at full aperture until the camera moves a lever on the lens. Use an FD adapter with a ring that moves this lever.
- Sony EAdapter · 24 mm
- Canon RFAdapter · 22 mm
- Nikon ZAdapter · 26 mm
- Fujifilm XAdapter · 24.3 mm
- L-MountAdapter · 22 mm
- Micro Four ThirdsAdapter · 22.75 mm
- Fujifilm G (GFX)Adapter · 15.3 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 24 mm
No plain adapter reaches infinity focus on: Canon EF, Nikon F.

Other Mounts03
This lens family is also indexed in 9 other mounts.
CANON EFView lens
Sigma 28-70mm F/2.8-4 UC
CONTAX/YASHICAView lens
Sigma 28-70mm F/2.8-4 UC
KONICA ARView lens
Sigma 28-70mm F/2.8-4 UC
MINOLTA MDView lens
Sigma 28-70mm F/2.8-4 UC
MINOLTA SRView lens
Sigma 28-70mm F/2.8-4 UC
NIKON FView lens
Sigma 28-70mm F/2.8-4 UC
NIKON F DXView lens
Sigma 28-70mm F/2.8-4 UC
OLYMPUS OMView lens
Sigma 28-70mm F/2.8-4 UC
PENTAX KView lens
Sigma 28-70mm F/2.8-4 UC