Canon RF 10-20mm f/4 L IS STM
Announced October 11, 2023
PixelMeter The PixelMeter is our 1–100 aggregate of reviewer scores from trusted publications and creators. Weighted by source tier — not a raw average, and not PetaPixel’s own review.
Reviewer Consensus
Strong
The Canon RF 10-20mm f/4 L IS STM is a unique, high-performance ultra-wide zoom that offers an extreme field of view in a surprisingly compact and lightweight design. While it requires digital correction for distortion and vignetting, it delivers professional-grade sharpness and effective stabilization for architecture, landscape, and interior photography.
Weighted from 16 reviewer scores
Pros
- Exceptional sharpness and image quality
- Compact and lightweight construction
- Fast, quiet, and reliable autofocus
- Effective optical image stabilization
- Unique, extreme ultra-wide focal range
Cons
- Heavy reliance on digital distortion and vignetting correction
- High price point
- Inability to use standard front filters
- Reduced corner sharpness and image quality after corrections
- Launch price $2,299 (USD)
- Focal length & aperture 10-20mm f/4
- Mount & coverage Canon RF Full-Frame
- Stabilization Optical IS, 5 stops (CIPA)
- Close focus 25 cm (0.12x)
- Autofocus motor STM
- Weight & size 570g · 83.7 x 112 mm (3.30 x 4.41 in)
What the Reviewers Say
All 16 expert reviews, weighted into the PixelMeter score.
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- PetaPixel 9/10
The Canon RF 10-20mm f/4 L has the RF ultra-wide range covered well.
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Okay, now with my verdict so far, the Canon RF 10-20mm f/4 L IS STM is an unashamedly high-end lens aimed at those who demand the widest coverage without compromising on quality, distortion, or having to lug around a hefty chunk of glass.
- OpticalLimits 7.5/10
Needless to say but the Canon RF 10-20mm f/4 L IS STM is an expensive beast. However, if it's within your budget, it's worth it.
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Professional and serious amateur photographers who want the extreme wide-angle advantage want this lens in their kits.
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This thing is amazing and so useful and versatile too, not to mention just plain fun [...]
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This is a must buy for the people that know they need this.
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Nevertheless, the optical performance, handling and rendering of architecture, cityscapes and interiors surely make this the ultimate ultra-wide zoom.
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The Canon RF 10-20mm lens is a fantastic addition to the RF range of lenses that Canon offers, and honestly, there’s no substitute if you need this range of focal length.
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If you love to have a zoom lens that can go crazy wide, this Canon RF 10-20mm f/4 L IS STM is just a very unique lens that no other systems offer right now, and even if you already have the Canon EF 11-24mm f/4 lens, it will still be very hard to resist this lens once you find…
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It is absolutely what you expect from a Canon L-series professional standard lens, but that's not what's interesting about this lens, not at all.
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I wasn't really expecting to think it was that wonderful, but having shot a few things from the top of The Shard and also actually some street photography on ground level, I have to say I'm really impressed.
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I reckon the RF 10-20L is perfect for the landscape photographer that loves an extreme field of view or the real estate and architectural photographer that works in tight spaces.
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This Canon RF 10-20mm f/4L IS STM is an ultrasharp, ultra-ultrawide lens. Pleasant surprises are that it's also lightweight, reasonably practical, compact and inexpensive for what is otherwise an optically insane lens.
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It's offering massive improvements versus the 11-24mm.
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If you capture ultra wide subjects, whether real estate and architecture, interiors or landscape photography, the latest ultra wide lens to join the RF range will be of particular interest.
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I loved this lens and I would say it's recommended for your camera bag.
