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Canon RF 10-20mm F4 L IS STM vs Laowa 8-16mm f/3.5-5 Zoom CF

Both are Canon RF wide zoom lenses. Here is what actually differs.

Pick the Canon RF 10-20mm F4 L IS STM if

  • You need more reach: 20mm vs 16mm at the long end
  • You shoot handheld in dim light or video: it has optical image stabilization and the Laowa 8-16mm f/3.5-5 Zoom CF does not
  • You shoot full frame: the Laowa 8-16mm f/3.5-5 Zoom CF is made for APS-C
  • You care about the shape of out-of-focus highlights: 9 aperture blades vs 5
  • Our notes say it suits: Landscapes, architecture and interiors, astro and wide video

Pick the Laowa 8-16mm f/3.5-5 Zoom CF if

  • You need ⅓ stop more light for low light or background blur (f/3.5 vs f/4)
  • You want a wider view: 8mm vs 10mm at the wide end
  • You shoot close-ups: it focuses down to 0.2 m vs 0.25 m

Spec differences

14 differences
Specifications that differ between the Canon RF 10-20mm F4 L IS STM and the Laowa 8-16mm f/3.5-5 Zoom CF
Canon RF 10-20mm F4 L IS STM Laowa 8-16mm f/3.5-5 Zoom CF
Brand
Canon
Laowa
Format
Full frame
APS-C
Focal length
10-20mm
8-16mm
Max aperture
f/4
f/3.5 ⅓ stop faster
Weight
570 g
not listed
Length
112 mm
not listed
Diameter
83.7 mm
not listed
Filter thread
not listed
86 mm
Min focus distance
0.25 m
0.2 m closer
Max magnification
0.12×
0.13× larger
Aperture blades
9 more blades
5
Autofocus motor
STM
not listed
Image stabilization
Yes stabilized
No
Released
2023
not listed
3 identical specs hidden: mount, type, optical design. Show all
Mount
Canon RF both
Type
Wide Zoom both
Optical design
16 elements / 12 groups both

Our notes

Canon RF 10-20mm F4 L IS STM

A full-frame ultra-wide zoom for Canon RF mirrorless cameras with image stabilization and a constant f/4 aperture. L-series build.

Pros

  • Very wide 10mm start
  • Constant f/4
  • Image stabilization
  • L-series build

Cons

  • Bulbous front element limits filter use
  • Slower than f/2.8 wide zooms
  • Software distortion correction is part of the design

Our notes

Laowa 8-16mm f/3.5-5 Zoom CF

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