CN-R20mm T1.5 L F

Comprehensive View with 8K Quality

The New RF Mount, CN-R20mm T1.5 L F is a great choice for a wide-angle prime lens with a fixed focus that can be used to capture visuals of both large landscapes and confined spaces.

The 20mm ultra wide-angle lens fills the space between 14mm and 24mm, so it can be used with current EOS Cinema systems for more precise shooting.

  • Supports 35mm full-frame cameras
  • Superior optical performance for 8K/4K cameras
  • Compatible with Cinema EOS C70 and EOS R5 C



The lenses from Canon are skillfully crafted for the motion picture industry, giving you the essential equipment to confidently transform your creative concepts and narratives into reality.

RF Mount Connectivity

Through its 12-pin electronic contacts, the RF mount significantly improves EOS-lens communication support and enables new functions.

Like EF cinema lenses, lens metadata can be read, recorded, and displayed at the destination. Compatible cameras can correct lateral chromatic aberration, peripheral illumination, and dual pixel focus guide using this data.

Direct Attachment

When using the lenses with the EOS C70 and the EOS R5C, the RF mount eliminates the need for a mount adapter.

Distortion Correction


Lines are straightened

Lines look distorted

When shooting video with compatible cameras*, high-speed data transfer makes it possible to instantly transfer lens metadata to the camera, enabling distortion correction in accordance with lens characteristics.

*Supported cameras (as of June 2023): EOS C70, EOS R5 C (Movie Mode only)

Peripheral Light & Chromatic Aberration Correction

Based on registered lens information, these image correction features can be activated or deactivated.

Lens Information Display & Recording

The viewfinder can show lens information, and metadata like lens name and position can be stored in the image.

Dual Pixel Focus Guide

When using manual focus, both lens distance and distance measurement information may be used to display the Dual Pixel Focus Guide.

The Dual Pixel Focus Guide enables users to quickly and precisely focus by displaying both front and back focus.

Distance Indicator

As a defining characteristic of the Cinema Lens, the focus ring can mark numbers on both the left and right sides of the lens, allowing the distance indicator to be viewed from either side.

Changeable "ft" and "m" display units - by switching exterior components, users can toggle between feet and metres for distance marking.

Phosphorescent Indicators

Indicator markings with phosphorescent paint have been applied to the front barrel (for right-side viewing) to increase nighttime and low-light shooting visibility.


Mount RF Mount
Focal Length 20mm
Maximum Diameter Ratio (T-number) 1:1.5
Number of Iris Blades 11 blades
Angle of View

Aspect Ratio 1.5:1
Screen dimensions 36.0 x 24.0mm

84.0°x 61.9°

Aspect ratio 1.78:1
Screen dimensions 24.6×13.8mm

63.2°x 38.1°
Minimum Shooting Distance 0.3 m / 12”
Shooting Range at Closest Approach

Aspect ratio 1.5:1
Screen dimensions 36.0×24.0mm

33.8 x 22.5 cm

Aspect ratio 1.78:1
Screen dimensions 24.6×13.8mm

23.1 x 13.0cm
Front Diameter Φ114 mm
Image Circle Φ43.3 mm
Dimensions(W x H x D) Approx. 118.4 x 118.4 x 125.5 mm
Weight Approx. 1.4 kg