Canon L RF 20-50mm f/4 L IS USM PZ 50mm
Combining an internal power zoom with a constant f/4 aperture and 6-stop stabilization, this 420g lens is Canon’s first full-frame RF L-series optic to start at 20mm. A dual-operation switch allows seamless toggling between manual and powered zoom driven by dual Nano USM actuators, while the 9-blade aperture and 0.33x magnification add practical versatility. It is best for solo video shooters and gimbal operators who need silent, parfocal-like zoom control without external rigging.
Focal length 20-50mm
Aperture f/20
Mount Canon RF
stabilization Yes
Weather Sealed Yes
Weight 420 g
af type Nano USM
lens type zoom
62 Overall Score
Price $1,399
Snapshot
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Zoom |
| Focal Length Min | 20 |
| Focal Length Max | 50 |
| Aspherical Elements | 2 |
| ED Elements | 3 |
| Coating | fluorine coating |
Aperture
| Max Aperture | f/20 |
| Min Aperture | f/4 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Canon RF |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.4 kg / 0.9 lbs |
AF & Stabilization
| AF Type | Nano USM |
| Stabilization | Yes |
| Stabilization Stops | 6 |
Focus
| Min Focus Distance | 239 |
| Max Magnification | 0.33x |
vs Competition
| Spec | Canon L RF 20-50mm f/4 L IS USM PZ 50mm | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Sony E 18-135mm f/3.5-5.6 OSS |
|---|---|---|---|---|---|---|
| Focal Length | 20-50mm | 16-300mm | 17-70mm | 17-28mm | 12-35mm | 18-135mm |
| Max Aperture | f/20 | f/3.5 | f/2.8 | f/2.8 | f/2.8 | f/3.5 |
| Mount | Canon RF | Sony E | Sony E | Nikon Z | Micro Four Thirds | Sony E |
| Stabilization | true | true | true | false | true | true |
| Weather Sealed | true | true | true | true | true | false |
| Weight (g) | 420 | 615 | 544 | 450 | 306 | 326 |
| AF Type | Nano USM | HLA | RXD | Stepping Motor | Autofocus | Linear motor |
| Lens Type | zoom | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Canon L RF 20-50mm f/4 L IS USM PZ 50mm | 94.2 | 29.8 | 70.6 | 50.6 | 68.5 | 31.6 | 77.5 | 30.8 | 99.2 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 53.8 | 84.5 | 64.2 | 87.4 | 99.2 | 76.6 | 99.6 | 81.9 | 99.2 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.8 | 86.4 | 69.1 | 85.5 | 91.2 | 83.3 | 89.6 | 86.1 | 82.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 86.8 | 86.4 | 75.6 | 85.5 | 88.3 | 83.3 | 68.1 | 71 | 36.8 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.8 | 81.1 | 85.7 | 50.7 | 86.6 | 83.3 | 80.6 | 86.1 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 74.6 | 73 | 40.3 | 78.7 | 76.6 | 95.8 | 90.2 | 82.4 |
Price
Value & Pricing
From $1,399
