Quick answer
The Canon EF 300mm f/2.8L IS USM + 2x extender is a telephoto prime lens covering 300mm at f/300.0 for the Canon EF mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
About this lens
The Canon EF 300mm f/2.8L IS USM + 2x extender is a telephoto prime lens covering 300mm at f/2.8 for Canon EF mount cameras, from the Canon L series with Image Stabilizer and ultrasonic-motor autofocus. A professional super-telephoto L-series lens, a fixture on sidelines and at wildlife hides.
Canon EF 300mm f/2.8L IS USM + 2x extender specifications
What can you shoot with the Canon EF 300mm f/2.8L IS USM + 2x extender?
At 300mm this is a telephoto prime, which typically suits:
- Sports and action
- Wildlife and birds at moderate distance
- Compressing distant landscapes
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 300mm | 6.9° | 8.2° |
| APS-C | 1.6x | 480mm | 4.3° | 5.2° |
Frequently asked questions
What mount does the Canon EF 300mm f/2.8L IS USM + 2x extender use?
It uses the Canon EF mount, so it fits Canon EF cameras directly.
What is the focal length of the Canon EF 300mm f/2.8L IS USM + 2x extender?
It is a fixed 300mm lens with a maximum aperture of f/300.0. That makes it a telephoto lens.
Is the Canon EF 300mm f/2.8L IS USM + 2x extender a prime or a zoom lens?
It is a prime lens with a fixed 300mm focal length. Primes usually open wider than zooms; this one opens to f/300.0.
What is the Canon EF 300mm f/2.8L IS USM + 2x extender equivalent on a crop sensor?
On APS-C (1.6x crop) it frames like 480mm on full frame, with a 4.3° horizontal and 5.2° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Canon EF 300mm f/2.8L IS USM + 2x extender fit?
Any Canon EF-mount camera, including Canon EOS 1D X, Canon EOS 5D, Canon EOS 5D Mark II, Canon EOS 5D Mark III, and Canon EOS 5D Mark IV and 7 more.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
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