Canon
Canon CN-E 20-50mm T2.4 L FP Cinema EOS Flex Lens with RL-S1 Relay Converter
A full-frame cinema zoom covering 20-50mm with constant T2.4 aperture for 8K large-format production
- Constant T2.4 aperture across the zoom range for consistent exposure
- 20-50mm focal length covers wide to normal perspectives on large-format sensors
- Interchangeable EF and PL mounts adapt to different cinema camera systems
- 8K optical performance resolves fine detail for high-resolution HDR productions
- First full-frame cinema zoom from Canon designed for large-format image circles
Cinema Flex Zoom for Large-Format Production
The Canon CN-E 20-50mm T2.4 L FP is a full-frame cinema zoom lens built for 4K and 8K HDR workflows. It delivers a constant T2.4 aperture across the 20-50mm focal range for consistent exposure while zooming. The Flex series design supports interchangeable EF and PL mounts, adapting to different camera ecosystems. Colour science aligns with Canon Cinema EOS cameras for a unified look.
Mount Compatibility and Sensor Coverage
Verify that your camera uses either a Canon EF or PL mount before ordering. The lens covers a full-frame image circle, so it is intended for large-format sensors. If your camera has a smaller sensor, the field of view will be narrower than the marked focal lengths. The RL-S1 relay converter is included to maintain electronic communication with EF-mount bodies.
Thermal Behaviour and Power Draw
The lens is a passive optical device with no internal cooling fans or active electronics that generate significant heat. It draws no power of its own; aperture and metadata communication are powered by the camera body. In normal production use the barrel remains at ambient temperature and operates silently. No external power supply or thermal management is required.
Highlights
- Constant T2.4 aperture across the zoom range for consistent exposure
- 20-50mm focal length covers wide to normal perspectives on large-format sensors
- Interchangeable EF and PL mounts adapt to different cinema camera systems
- 8K optical performance resolves fine detail for high-resolution HDR productions
- First full-frame cinema zoom from Canon designed for large-format image circles
Specifications
No published specifications for this item yet.
Questions about this item
What comes in the box with the CN-E 20-50mm T2.4 L FP Cinema EOS Flex Lens and RL-S1 Relay Converter?
The box contains the CN-E 20-50mm T2.4 L FP Cinema EOS Flex Lens and the RL-S1 Relay Converter for Canon EF and PL mount interchangeability.
How do I choose between the EF and PL mount versions of the CN-E 20-50mm T2.4 L FP lens?
This single unit is interchangeable between EF and PL mounts using the included RL-S1 Relay Converter, so no separate version choice is needed.
What does the constant T2.4 aperture mean when shooting with the CN-E 20-50mm lens on a full-frame cinema camera?
It maintains consistent light transmission and exposure across the entire 20-50mm zoom range, enabling reliable low-light performance without ramping.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



