Canon RF 10-20mm F4 L IS STM is a Fixed aperture Auto Focus (AF)
Ultra-Wideangle Zoom lens with Optical Image stabilization and 35mm FF max sensor coverage, and it is designed to be used with
RF Mount cameras .
What type of photography is the Canon RF 10-20mm F4 L IS STM lens good for?
The choice of photography type for which you intend to use the Canon RF 10-20mm F4 L IS STM is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
Canon RF 10-20mm F4 L IS STM is a member of Canon's RF L series of lenses. Below you can see the latest lenses in this series.
Canon RF L Series Lenses in Canon RF Mount
Reasons to Buy the Canon RF 10-20mm F4 L IS STM Lens
Here we've included a summary of the advantages and disadvantages of the Canon RF 10-20mm F4 L IS STM lens in a list form to assist you in determining whether it offers the features you need.
0.25m / 9.8 inch
Canon RF 10-20mm F4 L IS STM from Amazon B&H PHOTO
Lens Mount
Canon RF 10-20mm F4 L IS STM is compatible with cameras that have a Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V , Canon R6 III and Canon C50 .
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Canon RF 10-20mm F4 L IS STM has a maximum diameter of 84mm and a total length of 112mm . It weighs 570g / 20.1 oz .
Check the size of the Canon RF 10-20mm F4 L IS STM when attached to RF Mount cameras :
Below, you'll find a scaled side-by-side image comparing the sizes of the Canon RF 10-20mm F4 L IS STM and the Canon RF 14-35mm F4L IS USM , offering a better understanding of their dimensions in real life. Check the detailed comparison of these two lenses here .
Comparison image of the Canon RF 10-20mm F4 L IS STM and the Canon RF 14-35mm F4L IS USM Size and Weight
Canon RF 10-20mm F4 L IS STM Size
Focal Range
Canon RF 10-20mm F4 L IS STM has a focal range of 10-20mm and 2.0X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 15 - 30mm .
Weather Sealings
The Canon RF 10-20mm F4 L IS STM is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Canon RF 10-20mm F4 L IS STM with a weather-sealed camera body such as the Canon R6 V , Canon R6 III and Canon C50 .
Optical Image Stabilization
The Canon RF 10-20mm F4 L IS STM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting. Canon RF 10-20mm F4 L IS STM's stabilization system is effective up to 5.0 stops .
Canon RF 10-20mm F4 L IS STM also has a Stabilization On/Off switch on the lens body so you don't need to delve into your cameras menu to disable or enable the IS.
Zoom Method
Canon RF 10-20mm F4 L IS STM features Rotary (internal) zoom method where the length of the lens doesn't change while you are zooming in or out. Even though this design has a size disadvantage in general compared to extending designs, it has the benefits of better sealing against dust and moisture, no zoom creep and no weight balance shift while zooming.
Maximum Magnification Ratio
Canon RF 10-20mm F4 L IS STM has a Max Magnification Ratio of 0.12x with a minimum focusing distance of 0.25m . 0.12x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Ultra-Wideangle Zoom type Canon RF mount lens alternatives with highest max magnification ratios :
Aperture
Canon RF 10-20mm F4 L IS STM is a fixed aperture lens with a constant max aperture of f4 from 10mm all the way to the 20mm .
Focal Length
Max Aperture
Min Aperture
10mm
F4
F22
20mm
F4
F22
Optical Formula
Canon RF 10-20mm F4 L IS STM's optical formula consists of 16 elements in 12 groups . The following special elements are used in this design:
1 Super UD 3 UD 3 aspherical Recommended Accessories for the Canon RF 10-20mm F4 L IS STM
Now it is time to look at the Top Recommended Accessories for the Canon RF 10-20mm F4 L IS STM .
Body Colour
Canon RF 10-20mm F4 L IS STM is available in Black color.
Canon RF 10-20mm F4 L IS STM Attached to a camera
Here are the 8 most popular comparisons of the Canon RF 10-20mm F4 L IS STM amongst Camera Decision readers.
Top Alternatives of Canon RF 10-20mm F4 L IS STM Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Canon RF 10-20mm F4 L IS STM.
Top Alternatives of Canon RF 10-20mm F4 L IS STM in Other Lens Mounts
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