Canon RF 10-20mm f4 L IS STM Lens

Key Features

• World-Record Rectilinear 10mm Reach: Captures an ultra-wide dramatic perspective without bending lines into a fisheye effect, maximizing structural accuracy in tight shooting spaces.
• Constant f/4 Maximum Aperture: Maintains a fixed brightness level across the entire 10-20mm zoom range, allowing for consistent exposure and lighting values.
• Up to 5 Stops of Optical Image Stabilization: Built-in optical IS offsets camera shake by up to 5 stops, expanding to 6 stops of coordinated stabilization when mounted on an EOS R camera body with In-Body Image Stabilization (IBIS).
• Peripheral Coordinated Control IS: Employs specialized optical algorithms that actively combat peripheral distortion and corner warping caused by handheld movement at extreme wide angles.
• Innovative STM Autofocus System: Stands as the first L-series lens to incorporate a silent, snappy stepping motor (STM) paired with a specialized position sensor, perfect for smooth video transitions.
• Elite L-Series Glass Infrastructure: Comprises 16 elements in 12 groups, utilizing one Super UD element, three UD elements, and three aspherical elements to systematically suppress chromatic and spherical aberrations.
• Built-in Rear Gelatin Filter Holder: Accommodates hand-cut gelatin filters behind the rear lens mount, resolving the challenge of attaching standard front filters to the bulbous front glass element.
• Advanced ASC and SSC Anti-Reflective Coatings: Employs Air Sphere and Super Spectra coatings to significantly suppress internal ghosting and flare, even when shooting wide angles directly into the sun.
• Fully Internal Focus and Zoom Barrel: Features a fixed outer chassis length that does not extend during operation, preventing internal suction of dust and maintaining balance on electronic gimbals.
• Tactile Customization Array: Equipped with a clickless custom control ring, a programmable Lens Function (L-Fn) button, and dedicated AF/MF and IS physical switches on the barrel.
• Robust Weather-Sealed Chassis: Fully sealed against moisture, dust, and raindrops, complemented by a fluorine front coating that repels fingerprints, oils, and water streaks.
• Ultra-Compact Form Factor Optimization: Weighs just 570 grams, making it roughly 50% lighter and 35% smaller than the legendary older EF 11-24mm f/4L lens it succeeds.

Technical Specifications

• Focal Length:

  10 to 20mm

• Maximum Aperture: f/4
• Minimum Aperture: f/22
• Lens Mount: Canon RF
• Format Compatibility: Full-Frame
• Angle of View: 130° 25′ to 94°
• Minimum Focus Distance: 25 centimeters (9.8 inches)
• Maximum Magnification: 0.12x
• Optical Design: 16 Elements in 12 Groups
• Diaphragm Blades: 9, Rounded
• Focus Type: Autofocus
• Image Stabilization: Yes (Optical up to 5 Stops / Coordinated up to 6 Stops with IBIS)
• Filter Size: Gel Filter (Rear Slot)
• Dimensions (Diameter x Length): 83.7 x 112.0 millimeters (3.3 x 4.4 inches)
• Weight: 570 grams (1.25 pounds)

Camera System Compatibility