The Canon RF 10-20mm F4L IS STM.
Redefining the professional ultrawide-angle with the new RF 10-20mm F4L IS STM, the world’s1
widest zoom lens with autofocus for Full Frame cameras. The launch of this lens shows our
commitment to the RF mount and demonstrates the innovations the mount can deliver.
Thanks to the unique design of the RF mount, the lens weighs just 570g, 620g lighter than the EF
11-24mm F4L USM, despite offering a wider angle of view, more features and better performance.
The RF 10-20mm F4L IS STM is ideal for professional photographers capturing Architecture,
Landscape, Interiors and Astrophotography and videographers shooting documentary, vlogging
and many more applications.
The lens delivers unparalleled image quality in a wide-angle lens, achieving incredible sharpness
and clarity with virtually no distortion. Its advanced rectilinear optical design means crisp images
where straight lines remain straight, even at the edges of the frame, all thanks to an advanced
optical formula.
The RF 10-20mm F4L IS STM incorporates the latest Peripheral Control Image Stabilisation (IS)
technology ensuring sharp, shake-free images even in challenging shooting conditions. The new
IS Algorithm ensures shake free images from centre to the edge of the frame and offers five stops
of optical stabilisation or six stops in combination with IBIS-equipped EOS R cameras.
A constant f/4 maximum aperture provides consistent exposures at every zoom setting, and
state-of-the-art optical coatings minimise ghosting and flare which can be common with ultra-
wide shots.
The RF 10-20mm F4L IS STM is the first L series lens to feature an STM motor thanks to the
compact lightweight focus group. The optimised linear focusing system delivers fast autofocus
in photos and smooth AF in video. All in near-silence.
