N°102169 · Family detail
CanonTelephoto·CANON EF mount·1987
Canon EF 300mm F/2.8L USM
Specifications01
MountCANON EF
Focal length300mm
Max aperturef/2.8
TypeTelephoto · Prime
Release year1987
Weight2855 g
Min focus distance3 m
Max magnification0.1099
Aperture blades8
Optical elements10
Groups8
AutofocusYes
StabilizationNo
Aperture controlNone
The aperture is controlled from the camera
Lens hoodET-118 - Clamp-on round
TeleconvertersCanon Extender EF 1.4X→ 420mm F/3.9
Canon Extender EF 1.4X II→ 420mm F/3.9
Canon Extender EF 1.4X III→ 420mm F/3.9
Canon Extender EF 2X→ 600mm F/5.6
Canon Extender EF 2X II→ 600mm F/5.6
Canon Extender EF 2X III→ 600mm F/5.6
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeSuper telephoto prime lens
Summary02
Canon EF 300mm f/2.8L USM is a Canon EF-mount prime telephoto lens with a maximum aperture of f/2.8, intended for sports, wildlife, and low-light telephoto use.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Canon EF mount has a flange distance of 44 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.
- Sony EAdapter · 26 mm
The camera mount (46.1 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Canon RFAdapter · 24 mm
- Nikon ZAdapter · 28 mm
- Fujifilm XAdapter · 26.3 mm
- L-MountAdapter · 24 mm
The camera mount (51.6 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Micro Four ThirdsAdapter · 24.75 mm
- Fujifilm G (GFX)Adapter · 17.3 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 26 mm
- Canon EFNative
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.