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Canon EOS R6 vs Sony a7 III Comparison

Storage & Battery

Canon EOS R6

Canon EOS r6

Sony a7 III

Sony A7 III camera
Canon EOS R6
Sony a7 III
a7 III
Refers to the year this camera was officially made available for sale.
Announcement Date
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
August 27, 2020
February 27, 2018
Camera Type
Camera Size
Camera Weight

The Canon EOS R6 and Sony a7 III are both mirrorless cameras with a similar scores, showcasing their quality and performance.  They also have comparable sizes and weights, with the Canon EOS R6 measuring 138 x 98 x 88mm and weighing 680g, while the Sony a7 III measures 127 x 96 x 74mm and weighs 650g.

The Canon EOS R6, released in 2020, boasts a more recent release date compared to the Sony a7 III, which was released in 2018. This could mean that the Canon EOS R6 may offer more up-to-date features and technology. On the other hand, the Sony a7 III has a slightly smaller and lighter build, making it a more convenient option for photographers who value portability.

Taking these factors into account, both cameras offer impressive specifications and performance. The choice between the two ultimately depends on individual preferences and priorities, such as the importance of cutting-edge technology or a compact design.

Canon EOS R6 vs Sony a7 III Overview and Optics

The Sony a7 III wins the optics comparison with a score of 81/100, while the Canon EOS R6 scores 79/100. Both cameras share some common specifications, such as CMOS sensor type, full-frame sensor size, and image stabilization. They also have different lens mounts – the Canon EOS R6 uses the Canon RF mount, while the Sony a7 III uses the Sony FE mount.

The Sony a7 III has a higher megapixel count at 24.2, compared to the Canon EOS R6 with 20.1 megapixels. This results in better image resolution and detail for the Sony a7 III. Additionally, the Sony a7 III has a higher DXOMARK score for the sensor, at 96, while the Canon EOS R6 scores 90. This means that the Sony a7 III offers better overall image quality.

The Canon EOS R6, however, has a faster shooting speed at 20 frames per second, compared to the Sony a7 III’s 10 frames per second. This makes the Canon EOS R6 more suitable for capturing fast-moving subjects and action photography. The Canon EOS R6 also uses the Digic X processor, whereas the Sony a7 III uses the Bionz X processor.

Comparing the optics of the Canon EOS R6 and the Sony a7 III, the Sony a7 III takes the lead due to its higher megapixel count and better sensor performance. However, the Canon EOS R6 offers advantages in shooting speed and may be more suitable for action photography. Ultimately, the choice between these two cameras depends on the specific needs and preferences of the photographer.

The higher the number of megapixels, the more detail the cameras sensor can capture.
20.1 MP
24.2 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
5472 x 3648 px
6000 x 4000 px
Sensor Type
The camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality.
Sensor Size
The sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture.
23.9 x 35.9 mm
23.8 x 35.6 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Full Frame
Full Frame
Frame Rate
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
20 fps
10 fps
Lens Mount
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Canon RF
Sony FE
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
Digic X
Bionz X
Aspect Ratio
The aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3.
Minimum ISO (Native)
Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image.
Maximum ISO (Native)
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
Minimum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Maximum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Minimum Shutter Speed
The minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory.
30 s
30 s
Maximum Shutter Speed
The maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries.
1/ 8000 s
1/ 8000 s
Autofocus Points
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
In-body Stabilization
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Viewfinder Type
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Viewfinder Resolution
3,690,000 dots
2,359,296 dots

Canon EOS R6 vs Sony a7 III Video Performance

The Canon EOS R6 outperforms the Sony a7 III in video capabilities, with a video score of 91/100 compared to the Sony a7 III’s score of 70. Both cameras share some common specs, such as 4K max video resolution and 3840 x 2160 max video dimensions. However, the Canon EOS R6 surpasses the Sony a7 III in certain aspects, making it the superior choice for videography.

The Canon EOS R6’s most significant advantage is its higher max video frame rate of 120fps, compared to the Sony a7 III’s 30fps. This allows for smoother slow-motion footage and greater flexibility in post-production.

The Sony a7 III, while lagging behind the Canon EOS R6 in video performance, still offers quality 4K video recording. Its 30fps max video frame rate is suitable for most standard video applications, but falls short when compared to the Canon EOS R6’s capabilities.

Taking these factors into account, the Canon EOS R6 is the clear winner in terms of video capabilities. Its higher video score, faster max video frame rate, and built-in time-lapse functionality make it the superior choice for videographers seeking high-quality video performance. While the Sony a7 III is still a capable camera, it is outshined by the Canon EOS R6 in this particular aspect.

Indicates if this camera is capable of recording video.
Max Video Resolution
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
Max Video Dimensions
Video resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video.
3840 x 2160 px
3840 x 2160 px
Max Video Frame Rate
How many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect.
120 p
30 p
Time-Lapse Built In
A built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video.
Video File Format
Different cameras can record in various video file formats. The File format you record in can impact how you edit and use the files.

Canon EOS R6 vs Sony a7 III Features and Benefits

The Canon EOS R6 outperforms the Sony a7 III with a feature score of 85/100 compared to 81/100. Both cameras share several specifications, including a 3-inch screen size, touchscreen functionality, flip screen, GPS absence, and connectivity options like WIFI and Bluetooth.

The Canon EOS R6 has a higher screen resolution of 1,620,000 dots, providing clearer and sharper image previews than the Sony a7 III’s 921,600 dots. This difference in resolution enables photographers to better assess image quality and make necessary adjustments during a shoot.

On the other hand, the Sony a7 III does not surpass the Canon EOS R6 in any specific feature. However, its slightly lower score of 81/100 still makes it a strong contender in the market. The camera’s performance, paired with its shared specifications with the Canon EOS R6, ensures that it remains a valuable option for photographers.

Considering the feature scores and specifications, the Canon EOS R6 stands out as the superior camera. Its higher screen resolution proves to be an advantage in assessing image quality during shoots. The Sony a7 III, while not excelling in any particular aspect, remains a viable choice due to its shared features with the Canon EOS R6. Ultimately, the decision between these two cameras will depend on the specific needs and preferences of the photographer.

Built-in Flash
A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it.
External Flash
External flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera.
GPS features in a camera will include location metadata to each of your photographs.
Weather Sealing
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Screen Type
Touch Screen
Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons.
Screen Size
Screen Resolution
Screen dots indicate the resolution of the LCD screen by including each sub pixel.
1,620,000 dots
921,600 dots
Flip Screen
A flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles.
Live View
Live View feature allows you to see a continuous live video of what is being seen through your lens.
Bluetooth capabilities allow you wireless control of your camera with other external devices.

Canon EOS R6 vs Sony a7 III Storage and Battery

The Canon EOS R6 and the Sony a7 III both have a high storage and battery score. They share similarities such as having two memory card slots and accepting SD/SDHC/SDXC cards. However, the Sony a7 III also accepts Memory Stick Duo/Pro Duo/Pro-HG Duo cards, giving it an advantage in storage options.

The Canon EOS R6 has a battery life of 360 shots, while the Sony a7 III outperforms with 750 shots. This makes the Sony a7 III better for longer shooting sessions without needing to change batteries. The Canon EOS R6 uses an LP-E6NH battery, whereas the Sony a7 III uses an NP-FZ100 battery.

Both models support USB charging. This can be beneficial for users who want to charge their camera on the go using power banks or other USB power sources.

Both cameras have their strengths and weaknesses in the storage and battery department. The Sony a7 III has a longer battery life and additional memory card compatibility, making it suitable for extended use and diverse storage options.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC (UHS-II compatible)
SD / SDHC / SDXC, Memory Stick Duo / Pro Duo / Pro-HG Duo
Dual Memory Card Slots
Battery Type
Battery Life
Approximately how long this cameras battery will last measured by how many photographs you will be able to take.
360 shots
750 shots
USB Charging
Sensor scores tested by DXOMARK
Overall Score
DXOMARK overall sensor score.
Portrait (Color Depth)
As described by DXOMARK 'The Portrait score in our camera sensor reviews defines color depth performance and its unit is a number of bits. A color depth of 22 bits is excellent; differences below 1 bit are barely noticeable.'
24.2 bits
25.1 bits
Landscape (Dynamic Range)
As described by DXOMARK 'The Landscape score in our camera sensor tests defines the maximum dynamic range of the camera sensor and its unit is an exposure value (EV). A value of 12 EV is excellent with differences below 0.5 EV usually not noticeable.'
14.3 EVs
14.7 EVs
Sports (Low-Light ISO)
Described by DXOMARK as 'The maximal value of ISO sensitivity needed to reach a given value of Signal-to-Noise Ratio (SNR). The greater the value, the better'
Main Features
Extra Features
Construction and Durability
Handling and Ergonomics
Value for Money
Total Score

Alternatives to the Canon EOS R6 and Sony a7 III

Canon EOS R6 vs Sony a7 III Comparison image.

Are you still undecided about which camera is right for you? Have a look at these popular comparisons that feature the Canon EOS R6 or the Sony a7 III:

User Scores
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