Canon RF 10-20mm F4 L IS STM Review

Canon RF 10-20mm F4 L IS STM

General information

This is a zoom lens manufactured by Canon and the lens was released 2023.
The lens belongs to the category wide angle zoom lenses, a wide angle lens where you have the possibility to zoom in and out.

Compatibility, autofocus and focal length

This lens is constructed to fit all models of Canon cameras, regardless of camera model or type of sensor.

The ability to use autofocus is available for all cameras.

The lens has a focal length of 10-20 mm. Depending on which camera the lens is used, the experienced and perceived focal length will be different. Please visit the list of compatible cameras below, it will provide the equivalent focal length you get on each camera.

Lens brightness and image stabilizer

The lens brightness and aperture value is f/4.

The lens is to considered fairly bright.  This will make it so much easier shooting in darker environments where you do not want or can use flash lighting, for example in churches or at different sports venues.

A feature worth commenting, which is also related to lens brightness, is that the brightness and maximum aperture-value remains constant regardless of focal length used. This makes it easier for you as a photographer. No matter if you are have the focus ring and focal length at 10 mm or at 20 mm the aperture value can be f/4.

Inside the lens there is an image stabilizer, which helps to fend off possible movements and tremors. This is very positive and can be of great help in situations and conditions where the light is inadequate and not enough for decent shutter speeds.

Filter and Lens Hood

This lens does not support the use of filters which is slightly negative. To have the option to use filters, for their optic purpose or as protection, would have been nice but no.

Most lenses have the lens hood as an accessory, something that you mount on the lens seperately, but this lens has a lens hood as a fixed part of the lens.

Things to consider before buying

Below you will find some summarized points and facts that can be considered as the 'pros and cons' of this lens. These are based entirely on the facts and values that are accessible through the lens specification, so we highly recommend that you also read the reported reviews available (see tab 'Reviews'); this in order to get a more complete view of the lens and its capabilities. Reviewer opinions reflect the lens, its use and its optical performance in a more accurate way, but any way - here a few different points to consider before buying this lens.

  • Constant maximum aperture value regardless of focal length
  • Has a built-in image stabilizer
  • Works on all sensor types
  • A lens hood is included (solid construction)
  • The lens is sealed against dust and moisture
  • Not possible to use filters
  • Heavy (570 gr)
  • The price (more info)

Our Review Ratings

Time to grade Canon RF 10-20mm F4 L IS STM.

Build Quality     
Image Quality     
Autofocus     
Sharpness     
Versatility     
Value     
Overall rating 3 of 5

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