Canon Europe has launched its new RF 10-20mm F4L IS STM lens, a new addition to the L-series range enabling an extreme ultra-wide shot.

The lens builds on the capabilities of the existing wide-angle RF range as the “widest AF zoom ever made for a full frame camera” with an angle of view of up to 130°. It features a zoom that ranges from 20mm wide-angle to an ultra-wide 10mm focal length.

The RF 10-20mm F4L IS STM incorporates the latest Peripheral Control Image Stabilisation (IS) technology which ensures “crystal-clear, shake-free images even in challenging shooting conditions or without tripod access.” The new IS 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 an in body stabilised camera. Its rectilinear optical design means “you can expect a crisp and accurate outcome – so straight lines remain straight, even at the edges of the frame.” 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.”

Weighing in at 570g, the RF 10-20mm F4L IS STM is less than half the weight (610g lighter) and 2cm smaller in width and length than the EF 11-24mm f/4L USM.

The lens is resistant to dust and moisture for professional use.


Key features include:

  • The aspherical, Super UD, and UD lens elements (including one Aspherical UD element) which help to achieve high image quality appropriate for an L lens

  • Highly durable dustproof and waterproof qualities, to withstand rigorous conditions faced by professionals

  • SWC (on 2 lens surfaces) and ASC (Air Sphere Coating) reducing ghosting caused by light sources within the image, a phenomenon often seen in wide-angle lenses

  • First L series lens to feature STM motor and full time manual focus capability, thanks to compact lightweight focus group


The RF 10-20mm F4L IS STM lens is priced at £2579.99 and will be available from late October.

Jon Creamer

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