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Canon RF 10-20mm f/4 L IS STM Lens (Canon RF)

BH #CA10204RF • MFR #6182C002
Canon RF 10-20mm f/4 L IS STM Lens (Canon RF)
Key Features
  • Full-Frame | f/4 to f/22
  • Fast Ultra-Wide Zoom
  • High-Speed STM Autofocus System
  • Optical Image Stabilizer
A state-of-the-art ultra-wide zoom lens, the Canon RF 10-20mm f/4 L IS STM delivers professional quality results for all your landscape, nature, architecture, and interior image-making needs. Optimized for both photo and video applications, this versatile, full-frame, L-series lens provides visual drama to your imagery for outstanding results that will be remembered for a lifetime.
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Canon RF 10-20mm f/4L IS STM Overview

  • 1Description
  • 2Dynamic Ultra-Wide Versatility
  • 3
  • 4Advanced L-Series Optics
  • 5Fast Autofocus and Image Stabilization
  • 6Handling and Design
  • 7
By B&H Photo's
Dynamic Ultra-Wide Versatility
A state-of-the-art ultra-wide zoom lens, the Canon RF 10-20mm f/4 L IS STM delivers professional quality results for all your landscape, nature, architecture, and interior image-making needs. Optimized for both photo and video applications, this versatile, full-frame, L-series lens provides visual drama to your imagery for outstanding results that will be remembered for a lifetime.
Advanced L-Series Optics
  • Rectilinear optical design featuring one Super UD element, three standard UD elements, and three aspherical elements to reduce chromatic aberration and distortion throughout the zoom range, while also providing consistent edge-to-edge sharpness and illumination.
  • ASC (Air Sphere Coating) and SWC (Subwavelength Structure Coating) to reduce flare, ghosting, and other aberrations for increased contrast and color accuracy.
  • FLC fluorine coating applied to the lens's surface effectively repels dust, water droplets, grease, and dirt, ensuring easy removal even when they adhere to the lens surface. This coating also endures a high frequency of lens surface wiping, and its anti-reflective effect contributes to the capture of clear images.
Fast Autofocus and Image Stabilization
  • Fast and precise autofocus system delivering quick, nearly-silent autofocus performance with full-time manual focus override.
  • Quiet high-speed STM leadscrew-type focus drive system that is especially beneficial to video users.
  • An Optical Image Stabilizer minimizes the appearance of camera shake by five stops to better enable working in low-light conditions and with slower shutter speeds. Additionally, when paired with an EOS R-series camera that has In-Body Image Stabilization (IBIS), the Coordinated IS system allows for up to six stops of camera shake.
  • Minimum focusing distance of just under 10" at all focal lengths for unique ultra-wide closeups.
Handling and Design
  • Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation.
  • Nine-blade diaphragm to create a smooth and pleasing bokeh quality.
  • Accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.
  • Built-in petal-shaped lens hood.
  • L-series construction sealed against dust and moisture for working in inclement environmental conditions.

Canon RF 10-20mm f/4L IS STM Specs

Key Specs
Focal Length
10 to 20mm
Maximum Aperture
f/4
Lens Mount
Canon RF
Lens Format Coverage
Full-Frame
Focus Type
Autofocus
Image Stabilization
Yes
Filter Size
Gel Filter (Rear)
Maximum Aperture
f/4
Minimum Aperture
f/22
Lens Mount
Canon RF
Lens Format Coverage
Full-Frame
Angle of View
130° 25' to 94°
Minimum Focus Distance
9.8" / 25 cm
Maximum Magnification
12x
Optical Design
16 Elements in 12 Groups
Diaphragm Blades
9
Focus Type
Autofocus
Image Stabilization
Yes
Filter Size
Gel Filter (Rear)
Dimensions (ø x L)
3.3 x 4.4" / 83.7 x 112 mm
Weight
1.3 lb / 570 g
Packaging Info
Package Weight
1.87 lb
Box Dimensions (LxWxH)
9.7 x 6 x 5.3"

Canon RF 10-20mm f/4L IS STM Reviews

See any errors on this page? Let us know

What is the front cap size for this lens? Is it ...

What is the front cap size for this lens? Is it 77mm? 82mm? or different size? I understand there is no filter thread.
Asked by: Saud
The lens cap for the Canon RF 10-20mm f/4 L IS STM Lens (Canon RF) comes with the lens and it is a proprietary fit. Please take a look at the following link: https://bhpho.to/45BXzIK. Since the lens itself is 83.7 x 112 mm the cap will be around 84mm in size.
Answered by: Dan W
Date published: 2023-10-16

What kind of gel filter would fit in the rear ...

What kind of gel filter would fit in the rear holder?
Asked by: Cary
The Canon RF 10-20mm f/4 L IS STM Lens (Canon RF) is compatible with this type of gelatin filter: Kodak 3 x 3" Neutral Density (ND) #96 2.0 Optical Gelatin Wratten 2 Filter. You cut it to size with a scissors. https://www.bhphotovideo.com/c/product/587886-REG
Answered by: Daniel C
Date published: 2024-02-27

Do you sell an adapter for this lens to Nikon Z ...

Do you sell an adapter for this lens to Nikon Z body?
Asked by: Nikon user
Regarding the Canon RF 10-20mm f/4 L IS STM Lens (Canon RF), there is no lens adapter made that allows an RF-mount lens to fit onto a Z-mount camera.
Answered by: Elliot
Date published: 2023-10-13

Is the Built-in petal-shaped lens hood removable?

Is the Built-in petal-shaped lens hood removable?
Asked by: Brian
No, due to the nature of the optical glass design on the Canon RF 10-20mm f/4 L IS STM Lens (Canon RF), the lens hood is not removable. It's in place to protect the glass, since it's a dome shape and protrudes out.
Answered by: Marvin C
Date published: 2024-02-27

The lens’s circumference looks noticeably smaller ...

The lens’s circumference looks noticeably smaller than the EF 11-24mm lens, is it smaller enough so that a filter company like Kase could make an adapter to fit a front filter holder, so 4x6 filters can be used, or is it more likely to need need an adapter that requires Lee’s SW150 size filters?
Asked by: Khurram
The DSLR predecessor to this lens, the EF 11-24mm f/4L USM, has very similar demands for a front filter system. Fotodiox eventually came out with a WonderPana XL system for that lens (Look it up on B&H). I would imagine they will eventually produce a similar system for the Mirrorless RF 10-20mm f/4L IS STM lens if there is enough demand. Most of the parts would be identical with the only change being the core mounting pieces that actually physically mount on the lens body. They would be sized for the unique dimensions of the 10-20mm lens. No telling how long it will be, if ever. All you can do is wait while keeping an eye out.
Answered by: David
Date published: 2024-01-15

Is there an option to use a variable ND with this ...

Is there an option to use a variable ND with this lens?
Asked by: Jason
Unfortunately, the Canon RF 10-20mm f/4 L IS STM Lens does not have front filter threads, so you could not screw in a variable ND filter on it.
Answered by: Daniel C
Date published: 2024-01-11

What is the front cap (that cover the glass/hood) ...

What is the front cap (that cover the glass/hood) size for The Canon RF 10-20mm f/4 L IS STM? Lens
Asked by: Saud
The specs give the OD of the lens as 83.7mm, so the the ID of the cap (looks like a pillbox hat) would have to be about 85-86mm ID minimum. This is based on my measurements of the similar construction of the EF 11-24mm L USM ultrawide lens that I own. This gives a clearance of 1mm all the way around the circumference of the fixed hood. The depth of the cap is sufficient to allow it to completely enclose the depth of the petal cutout of the fixed hood. My lens and hood have a larger OD and ID, but the design is very similar. The staff answer that the cap design is proprietary is correct, and there is no other cap like it.
Answered by: David
Date published: 2024-01-11
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