Review: Canon EOS R6 mark III

Friday 30 January 2026, 13:26 by Nando Harmsen | 5,323 views | 4 comments

This article was translated from Dutch with the help of AI. Read the original.

Canon has released the third version of its popular EOS full-frame camera: the Canon EOS R6 mark III. I had the camera available for a week. In this review, you can read all about my findings with this third version of the EOS R6.

With the third version of this popular camera, the Canon EOS R6 mark III receives a substantial upgrade. The new sensor and improvements over the previous model may make an upgrade interesting. Provided the improvements play a role in your photography.

Canon Nederland provided the Canon EOS R6 mark III for this short review, together with the new RF 45mm f/1,2 STM.

Specifications

These are some of the camera's most important specifications, including several that have changed in the mark III compared with its predecessor.

• 32-megapixel CMOS sensor
  
• In-camera image stabilisation up to a maximum of 8.5 stops
  
• Frame rate up to 40 fps with the electronic shutter and 12 fps with the mechanical shutter
  
• 0.5-second pre-capture
  
• CF Express Type B card slot together with UHS-II-SD
  
• Face priority option for autofocus for up to 10 people
  
• Improved image recognition for autofocus
  
• EVF refresh rate up to a maximum of 120 Hz
  
• 7K 60p video in Canon Cinema Raw Lite
  
• Oversampled 4K 60p
  
• 3:2 7K Open Gate video recording up to 30 fps
  
• Full-size HDMI port
  
• False colour and waveform log view for video
  
• Maximum of 6 hours of continuous video recording
  
• Video proxy available
  
• LP-E6P battery good for 620 shots with LCD or 390 with EVF (CIPA)
  

For this review, I am focusing entirely on photography and will not cover the video capabilities. Apart from a list of pros and cons, which is based on the specifications.

The camera's appearance

The Canon EOS R6 mark III has not undergone any drastic visual changes. The camera has almost the same design. The buttons are unchanged, as is the operation.

Apart from a few cosmetic changes, nothing has changed compared with its predecessor. Everything feels familiar.
Anyone already familiar with the EOS R6 mark II will feel immediately at home with this successor. As expected, the menu is also the same as on all other EOS models. You find the functions where you expect them.

The new menu, with one extra line per tab and an additional 'chapter' for customisation.
The camera now has both a CF Express Type B and a UHS-I-SD. The fast CF Express Type B is needed to process the huge data stream. The camera has also gained a full-size HDMI connection.

The camera now has one CF Express Type B and one UHS-II-SD card. Like the full-size HDMI, this was mainly done for video.

Compared with its predecessor

When the camera is placed directly next to its predecessor, the tiny differences only then become apparent. The body has gained a slightly more streamlined appearance, which shows some resemblance to the EOS R5 mark II and EOS R3.

The Canon EOS mark III next to its predecessor.
The menu has also received the refined layout needed to display the number of menu items again. These are small differences that are barely noticeable, but they are there. They will make little difference in use.

The changes compared with its predecessor are mainly cosmetic. Spot the differences.

Image quality

The EOS R6 mark III now has a 32-megapixel partially stacked CMOS sensor. This means the resolution has increased slightly. The images are 14-bit, but this drops to 12-bit when using the electronic shutter.

Although the sensor has received a slightly faster readout speed, rolling shutter can occur with fast-moving subjects or when panning. Whether this is experienced as disturbing depends on the photographer, but also on the subject and the background.

Electronic shutter at 40 frames per second. Perfect for action photography. Be careful when panning, because there is rolling shutter, as you can see here.
The EOS R6 mark III goes up to just over ISO 51200. Here too, whether this is usable depends on the situation, as well as on personal preferences. A simple ISO test shows that ISO 12800 generally presents no problem at all.

Underexposure is easy to correct. Keep in mind that at ISO 400, the amount of noise produced by a three-stop correction is equal to the noise at ISO 3200.

The dynamic range is somewhat disappointing and is certainly not competitive. However, the performance of the EOS R6 mark III is simply good. This also applies to the image quality and ISO performance.

Frame rate and pre-capture

Like its predecessor, the Canon EOS R6 mark III has a maximum frame rate of 40 frames per second with the electronic shutter. With the mechanical shutter, a respectable 12 frames per second is possible. Pre-capture is also available.

Pre-capture is available, but it still lacks refined control over the function.
Pre-capture works very differently from on the EOS R6 mark II. The images are now saved separately straight away, instead of everything being stored in a single file. You no longer have to extract the images using Canon software or in the camera.

Pre-capture has changed drastically. The images are no longer stored in one file, but separately. The EOS R6 mark II is above, the EOS R6 mark III below
Pre-capture itself is very basic. It stores images for half a second before the shutter button is pressed fully. There is nothing else to set, leaving it behind the competition in terms of possibilities.

Using pre-capture requires certain conditions, such as setting the frame rate to H+. It can be programmed under a function button, but activation depends on the frame rate.
You can assign a button to activate pre-capture. However, pre-capture only switches on when the camera is set to the H+ speed (40 fps). So you cannot set everything for pre-capture directly with one button.

When pre-capture is enabled, there is no indication at all on the LCD or EVF screen. Only when pre-capture becomes active by half-pressing the shutter button does a small icon appear on the screen.

There is no indication at all that pre-capture is switched on. An icon only appears when the shutter button is half-pressed.

Practical use

The EOS R6 mark III works as you would expect a camera to. Operation is intuitive and the menu is clear and well organised. The LCD screen, touchscreen functions and viewfinder are excellent.

The northern lights on Monday 19 January 2026. The autofocus can focus perfectly in this situation and the LCD screen is clear and bright (EF24-105mm with EF-RF adapter at 24mm - ISO6400 - f/4 - 1s)
The autofocus has improved, but the differences are unnoticeable unless you place it directly next to its predecessor. Pre-capture is now more pleasant to use, although it still feels somewhat rudimentary, especially if you are used to other cameras.

A series of images of a fishing heron. Thanks to pre-capture, it is easier to catch the moment. This series was made in half a second and consists of only part of the entire series, which contains just over 60 images (0.5-second pre-capture and one second of continuous shooting)
It is very inconvenient that there is no clear information about pre-capture in the viewfinder and on the LCD screen. You do not know whether it is switched on until you half-press the shutter button.

If you activate the function with a shortcut and the frame rate is not set to H+, you get no feedback at all that the function has not actually been activated. For worry-free use of pre-capture, it is necessary to programme everything under C1, C2 or C3.

Night-time life in the city (RF 45mm - ISO12800 - f/3,5 - 1/10s)
One new and particularly surprising function is the requirement to create a password. The camera cannot be activated without a password. The function can be switched off later in the menu, but this has to be done deliberately.

A password to switch on the camera. Maybe it is useful, but I have not yet discovered why.

Conclusion

With the EOS R6 mark III, Canon has raised this camera line to a slightly higher level. Improvements have been made that make it much more pleasant to use. Especially the way pre-capture now works.

Geese in flight (RF 100-500mm at 500mm - ISO1600 - f/7,1 - 1/40s)
The increase in resolution is naturally useful when you regularly crop. If you do not crop or do not need to, you will find little added value in it. Noise performance is comparable with its predecessor.

It cannot be denied that the camera is a very good choice for both the serious hobby photographer and the professional. At the same time, it should be said that this is not a camera that stands far above the competition. It is questionable whether that is necessary.

Life in the city (RF 45mm - ISO400 - f/11 - 1/500s)
Where the camera is less impressive, despite the improvements, is pre-capture. The system works well, but it feels rudimentary. Other manufacturers offer many more options and greater flexibility.

Heron with prey, even in these conditions the eye detection and image recognition found the bird flawlessly (RF100-500mm at 500mm - ISO2500 - f/7,1 - 1/1000s)
Unfortunately, Canon has also removed the option to save raw images from multiple exposures on this camera. I had hoped this would return, but unfortunately it has not.

All in all, the Canon EOS R6 mark III is a very beautiful and capable camera that performs excellently in almost every area. The gain in resolution and video capabilities, together with the autofocus and frame rate performance, make it a wonderful camera.

Reflections (RF 100-500mm at 500mm - ISO800 - f/7,1 - 1/80s)

Pros

• Higher-resolution sensor
  
• Autofocus is fast and highly accurate
  
• Good image recognition, even when the subject is very small in the frame
  
• Effective image stabilisation
  
• High frame rate of up to 40 frames per second
  
• Pre-capture available
  
• Open Gate 7K video recording
  
• Full-size HDMI port
  
• Excellent ergonomics and intuitive operation
  
• Electronic viewfinder has a very short blackout
  

Cons

• Pre-capture is rudimentary
  
• Pre-capture requires manually setting the frame rate to H+
  
• No indication on the LCD or EVF that pre-capture is switched on
  
• Sensor performance lags behind the competition
  
• Rolling shutter due to the sensor's relatively slow readout
  
• Only 3.69-megapixel resolution for the electronic viewfinder
  
• No raw storage for multiple exposures
  

Upgrade or not?

The question that soon comes up is: should I upgrade or not? The answer, as so often, is that it depends. If you are coming from a Canon EOS R6, the first version, the answer is an emphatic yes. If you want to upgrade from the EOS R6 mark II, the answer is a sobering 'maybe'.

Although the camera certainly offers improvements in performance and capabilities, it depends on what you photograph. For burst modes and pre-capture, the new approach is much more pleasant. The EOS R6 mark III is also an improvement for video.

But do you not shoot video, or hardly ever? If action photography is not a priority, the added value is minimal. It is then a good idea to compare the specifications of both cameras and be honest with yourself.

Gallery

RF100-500mm @ 500mm - ISO8000 - f/7,1 - 1/1000s

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