The Canon EF 300mm F4.0L IS USM is a relatively compact (but at 1190 grams not particularly lightweight) L-series telephoto prime lens, compatible with Canon’s full-frame and APS-C DSLRs. The 300mm F4 trades brightness for portability, but a dual-mode (for normal and panning shooting) image stabilization system allows you to shoot at shutter speeds up to two stops lower than would otherwise be possible without a tripod. Optical construction consists of 15 elements in 11 groups, including two UD (ultra low-dispersion) elements and the lens is weather-sealed.

Canon 300mm f/4L USM Review – Best Tele For Your Money?

Lens type Prime lens
Focal length 300 mm
Image stab. Yes (2 stops)
Lens mount Canon EF
Max aperture F4.0
Min aperture F32.0
Min focus 1.50 m (59.06″)
Max magnification 0.24×
Weight 1190 g (2.62 lb)
Length 221 mm (8.7″)
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