10–20mm ultra-wide zoom range for Canon RF-mount full-frame mirrorless cameras, ideal for landscapes, architecture, interiors, astrophotography, and dramatic creative compositions.
Constant f/4 maximum aperture maintains consistent exposure throughout the zoom range and supports handheld low-light shooting.
Extremely wide 130° angle of view at 10mm captures expansive scenes and exaggerated foreground perspective.
Up to 5 stops of in-lens Optical Image Stabilization helps reduce camera shake; with a compatible EOS R body featuring IBIS, coordinated control can provide up to 6 stops.
Peripheral Coordinated Control IS stabilizes image corners as well as the center, which is especially valuable for ultra-wide stills and video.
STM stepping-motor autofocus delivers smooth, quiet, and accurate focusing for both photography and video recording.
Advanced L-series optical construction uses 16 elements in 12 groups, including Super UD, UD, and glass-molded aspherical elements to control distortion and chromatic aberration.
Original price was: $2,500.00.$2,125.20Current price is: $2,125.20.
The Canon RF 10–20mm F/4 L IS STM is a professional ultra-wide-angle zoom lens designed for Canon RF-mount full-frame mirrorless cameras. With an exceptionally wide 10–20mm focal-length range and a 130-degree diagonal angle of view at 10mm, it is an excellent choice for landscapes, architecture, interiors, astrophotography, travel, real estate, events, and creative wide-angle photography.
As part of Canon’s L-series, it combines premium optical construction, fast STM autofocus, up to 5 stops of Optical Image Stabilization, weather-resistant construction, and a compact 570 g design for photographers who need expansive coverage without excessive weight.
The RF 10–20mm F/4 L IS STM provides an ultra-wide 10–20mm focal-length range on full-frame Canon EOS R cameras. At 10mm, it delivers a dramatic 130-degree 25-minute diagonal angle of view, while at 20mm it provides a 94-degree diagonal angle of view.
This wide coverage makes the lens ideal for capturing expansive landscapes, dramatic cityscapes, large interiors, architecture, group photos, travel environments, and immersive perspectives. It is especially useful when working in tight spaces or when the photographer needs to include more of the scene in the frame.
The lens features a constant f/4 maximum aperture throughout the entire zoom range. This allows consistent exposure and depth-of-field control when zooming from 10mm to 20mm, helping create predictable results in changing lighting conditions.
The aperture range extends from f/4 to f/22, giving photographers flexibility for different lighting conditions, exposure settings, and depth-of-field preferences. Its nine-blade circular diaphragm helps create smooth, natural-looking out-of-focus highlights and attractive background rendering.
The Canon RF 10–20mm F/4 L IS STM uses an advanced optical construction with 16 elements in 12 groups. It includes one Super UD element, three UD elements, and three moulded aspherical elements, with one element combining UD and aspherical characteristics.
These components are designed to reduce chromatic aberration, distortion, and other optical imperfections across the ultra-wide frame. Canon’s Super Spectra, ASC, and SWC coatings help reduce ghosting and flare, supporting clearer images when shooting toward bright light sources, during sunsets, night photography, or backlit scenes.
The lens includes built-in Optical Image Stabilization that provides up to 5 stops of shake correction when used on its own. When paired with a compatible Canon EOS R camera body that features In-Body Image Stabilization, the lens and camera can work together through Coordinated IS to provide up to 6 stops of stabilisation.
This makes the RF 10–20mm F/4 L IS STM especially useful for handheld photography in low light, night scenes, interiors, travel shooting, and video recording without a tripod. Stabilisation helps support sharper images and smoother handheld footage in challenging shooting conditions.
The lens can focus as close as 0.25 metres from the sensor plane. This allows photographers to create close-up wide-angle compositions with a strong sense of depth and perspective.
With a maximum magnification of 0.12x at 20mm and 0.06x at 10mm, the lens is suitable for creative foreground compositions, environmental details, food photography, products, flowers, and immersive storytelling images. Its close-focusing ability adds versatility for photographers who want to combine wide-angle coverage with detailed foreground interest.
The Canon RF 10–20mm F/4 L IS STM uses an STM stepping-motor autofocus system for smooth, quiet, and accurate focusing. This makes it suitable for still photography, video recording, travel content, vlogging, architecture, and everyday shooting.
The lens supports autofocus and manual focus operation, giving photographers flexibility when precise control is required. Its responsive focusing performance is especially useful for dynamic scenes, handheld video, and fast-changing environments.
The Canon RF 10–20mm F/4 L IS STM measures approximately 83.7 mm in diameter and 112 mm in length in its retracted state, with an approximate weight of 570 g. Its compact and lightweight design makes it easy to carry for travel, hiking, city walks, architecture, and everyday photography.
Despite its ultra-wide zoom range, the lens maintains a practical size and weight for a professional L-series optic. Its balanced design makes it well suited to Canon EOS R full-frame mirrorless camera bodies.
The lens features a dust- and moisture-resistant construction designed for more reliable use in challenging outdoor environments. A fluorine coating on the front element helps resist fingerprints, dust, water droplets, and smudges, making the surface easier to clean during outdoor use.
Its weather-resistant design makes it a practical option for landscape, travel, architecture, and outdoor photography. As with all weather-resistant equipment, care should still be taken in heavy rain, dust, or extreme conditions.
The Canon RF 10–20mm F/4 L IS STM uses a rear-mounted gelatin filter system rather than conventional front screw-in filters. This design helps preserve the lens’s ultra-wide field of view while still allowing users to add compatible filter protection when needed.
The lens also includes an integrated petal-shaped lens hood to help reduce unwanted flare and provide added front-element protection during shooting.
The Canon RF 10–20mm F/4 L IS STM is an excellent choice for photographers who want a lightweight, professional ultra-wide zoom for Canon EOS R full-frame cameras. It is particularly well suited to landscapes, architecture, interiors, real estate, travel, cityscapes, astrophotography, events, and creative wide-angle photography.
Its 130-degree field of view, constant f/4 aperture, advanced stabilisation, premium L-series optics, and compact 570 g design make it a versatile addition to a Canon RF system.
The Canon RF 10–20mm F/4 L IS STM combines an ultra-wide 10–20mm focal-length range, 130-degree diagonal angle of view, constant f/4 aperture, f/22 minimum aperture, nine-blade circular diaphragm, 16-element optical construction with Super UD, UD, and aspherical elements, Super Spectra, ASC, and SWC coatings, up to 5 stops of Optical Image Stabilization, up to 6 stops of Coordinated IS, STM autofocus, 0.25 m minimum focusing distance, fluorine-coated front element, dust- and moisture-resistant construction, rear gelatin filter support, and lightweight 570 g design. It is a premium Canon RF-mount ultra-wide zoom lens for capturing expansive landscapes, architecture, interiors, travel scenes, and creative wide-angle images with exceptional clarity.
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