Full Specifications
| Focal Length | 10-20mm |
| Maximum Aperture | f/4 |
| Minimum Aperture | f/22 |
| Lens Mount | Canon RF |
| Optical Stabilization | Yes |
| Autofocus Motor | STM |
| Minimum Focus Distance | 0.25m |
| Weight | 570g |
| Dimensions | 83.7 x 112 mm |
| Weather Sealed | Yes |
| Optical Elements | 16 elements |
| Optical Groups | 12 groups |
What Users Think
Pros
- Compact and lightweight design, weighing approximately 1.25 pounds (570 grams)
- Excellent image quality with minimal distortion after applying lens corrections
- Super fast and quiet autofocus, particularly suitable for video capture
- Versatile focal length range from ultra-wide (10mm) to moderate (20mm)
- Sharp corner to corner performance, making it great for landscapes and general photography
- Built-in image stabilization which aids in handheld shooting
- Compatible with the RF ecosystem, allowing for seamless usage with R series cameras
Cons
- F4 maximum aperture may limit performance in low-light conditions, especially compared to f2.8 alternatives
- Some users report vignetting at the extreme ends of the focal range
- Limited usability unless you're shooting at extreme angles; not a general-purpose lens
- High price point compared to alternatives, especially for amateur photographers
- Lack of third-party lens options for RF mount compared to Sony or Nikon mounts
Community Verdict
The Canon RF 10-20mm f/4L IS STM lens is praised for its impressive optical performance and versatility, particularly among landscape and architecture photographers. However, its high price and narrower aperture compared to similar zoom lenses make it a consideration primarily for those who require ultra-wide options and are willing to invest in the Canon RF ecosystem.
"{'text': 'I absolutely love the lens. Tack sharp corner to corner, and you can get really creative with it.', 'context': 'Comment from u/eckoman_pdx in the r/canon subreddit discussing their ownership experience'}"
- Reddit user
"{'text': 'You will definitely end up using the 24-70 more because even 20mm is very wide.', 'context': 'Comment from u/Jkwong520 in a discussion comparing the 10-20mm to other RF lenses'}"
- Reddit user
"{'text': 'The 15-35 is a much more practical lens, but the 10-20 will allow perspectives that are a bit more unusual.', 'context': 'Comment from u/frankchn in a thread comparing the RF 10-20mm and RF 15-35mm'}"
- Reddit user
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Read our comprehensive review covering optical quality, sharpness, bokeh, autofocus performance, build quality, and more.
Read Full ReviewPairs Well With
Camera bodies compatible with the Canon RF mount
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