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Quick answer
Non-stabilized telephoto prime with a 77mm filter thread, introduced in 1991. It was replaced by an IS version in 1997.
Pros
- f/4 aperture
- Light at about 1.2kg
- Fast USM focusing
- Sharp for its age
Cons
- No image stabilization
- Replaced by a stabilized model in 1997
- Minimum focus of 2.5m
Verdict
A light 300mm for tripod or monopod use. The IS version is easier to handhold.
About this lens
A 300mm f/4 telephoto prime lens, the Canon EF 300mm f/4L USM is designed for Canon EF mount bodies, from the Canon L series with ultrasonic-motor autofocus. A relatively portable L-series telephoto prime for wildlife and sports.
Canon EF 300mm f/4L USM specifications
- Brand
- Canon
- Mount
- Canon EF
- Focal length
- 300mm
- Maximum aperture
- f/4.0
- Lens type
- Telephoto
- Format coverage
- full-frame
- Released
- 1991
- Optical construction
- 8 elements in 7 groups
- Aperture blades
- 8
- Autofocus motor
- USM
- Minimum focus distance
- 2.5 m
- Maximum magnification
- 0.13x
- Filter thread
- 77 mm
- Weight
- 1165 g
- Length
- 213.5 mm
- Diameter
- 90 mm
Specification source: global.canon
What can you shoot with the Canon EF 300mm f/4L USM?
- Wildlife
- Field sports
- Aviation
Its moderate maximum aperture works best in good light or with a higher ISO.
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
Is the Canon EF 300mm f/4L USM sharp?
Yes, it is known for sharp results even wide open. The 1.4x extender gives a 420mm f/5.6.
What is the difference from the 300mm f/4L IS USM?
The IS model adds image stabilization, which makes handholding easier. This older lens has none.
How heavy is the EF 300mm f/4L USM?
About 1.2kg, light for an L-series 300mm. A monopod still helps on long outings.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
