The Canon RF 100-500mm f/4.5-7.1 L IS USM is a versatile super-telephoto zoom lens designed for Canon’s full-frame RF-mount mirrorless cameras, extending 100mm beyond the reach of Canon’s EF 100-400mm f/4.5-5.6L IS II USM while weighing 14% less, thanks to optical design opportunities made possible by the RF mount’s large internal aperture and short back focus. It’s aimed at wildlife, sports, photojournalism, and aviation photographers who need a single lens covering mid-range action through distant subjects.
Optically, the lens covers a 100-500mm focal range with a variable maximum aperture of f/4.5 at the wide end narrowing to f/7.1 at full telephoto. The 20-element, 14-group optical design incorporates one Super UD (Ultra-low Dispersion) element and six UD elements, mitigating chromatic aberrations from the center of the frame to the periphery for high image quality throughout the zoom range, while Canon’s Air Sphere Coating (ASC) reduces flare and ghosting. A rounded 9-blade diaphragm contributes to smooth background rendering.
Autofocus is handled by a Dual Nano USM system, using two Nano USM focus motors to deliver near-silent, power-saving, high-speed autofocus for accurately tracking fast-moving subjects in both stills and video. Canon’s Optical Image Stabilizer provides up to 5 stops of shake correction with a 3-mode system, helping photographers achieve sharp handheld results even at extreme telephoto reach. A customizable Control Ring allows direct adjustment of settings such as aperture, ISO, or exposure compensation, and the lens is compatible with Canon’s RF 1.4x and RF 2x extenders when used within the 300-500mm range.
Build quality reflects the lens’s L-series positioning, with a magnesium alloy, weather-sealed construction and a fluorine coating to resist smudges and moisture. It includes a removable, rotating tripod mount collar for balanced support and quick switching between horizontal and vertical orientations. The lens has a minimum focusing distance of 2.95 ft. (0.9m) at 100mm and 3.94 ft. (1.2m) at 500mm, yielding a maximum magnification of 0.33x at 500mm, and accepts a 77mm filter thread. It measures approximately 93.8 x 207.6mm and weighs approximately 1,365g (3 lb.).
As a full-frame RF-mount lens, the RF 100-500mm f/4.5-7.1L IS USM delivers its full telephoto field of view on Canon full-frame RF-mount bodies while remaining compatible with Canon APS-C RF-mount cameras at a narrower, telephoto-equivalent effective field of view.
Key Features
– 100-500mm super-telephoto zoom (L-series) for Canon RF mount
– Maximum aperture f/4.5-7.1 (variable)
– 20 elements in 14 groups, including 1 Super UD element and 6 UD elements
– Air Sphere Coating (ASC)
– Dual Nano USM autofocus system
– Optical Image Stabilizer, up to 5 stops, 3-mode system
– Customizable Control Ring
– Rounded 9-blade diaphragm
– Weather-sealed magnesium alloy construction with fluorine coating
– Removable, rotating tripod mount collar
– Compatible with RF 1.4x and RF 2x extenders (300-500mm range only)
– Minimum focusing distance of 2.95 ft. (0.9m) at 100mm; 3.94 ft. (1.2m) at 500mm
– Maximum magnification of 0.33x (at 500mm)
– 77mm filter thread
– Approximate weight: 1,365g (3 lb.)
– Compatible with Canon full-frame and APS-C RF-mount cameras

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