N°109705 · Family detail
SpiratoneMirror·CANON FD mount
Spiratone Mirror 300mm F/5.6
Specifications01
Summary02
Spiratone 300mm f/5.6 mirror telephoto prime lens for Canon FD mount. Designed for long-distance subjects using a mirror design with a fixed maximum aperture.
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 8 other mounts.
CONTAX/YASHICAView lens
Spiratone Mirror 300mm F/5.6
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Spiratone Mirror 300mm F/5.6
MINOLTA MDView lens
Spiratone Mirror 300mm F/5.6
MINOLTA SRView lens
Spiratone Mirror 300mm F/5.6
NIKON FView lens
Spiratone Mirror 300mm F/5.6
NIKON F DXView lens
Spiratone Mirror 300mm F/5.6
OLYMPUS OMView lens
Spiratone Mirror 300mm F/5.6
PENTAX KView lens
Spiratone Mirror 300mm F/5.6