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Canon EOS R7 vs Sony a7 III Comparison

Storage & Battery

Canon EOS R7

Canon EOS R7 camera image

Sony a7 III

Sony A7 III camera
Canon EOS R7
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.
May 24, 2022
February 27, 2018
Camera Type
Camera Size
Camera Weight

The Canon EOS R7 edges out the Sony a7 III with a score of 83/100 compared to 81. Both are mirrorless cameras with similar dimensions: the EOS R7 measures 132 x 90 x 92mm, while the a7 III is 127 x 96 x 74mm. The EOS R7 is also slightly lighter at 612g versus the a7 III’s 650g.

The Canon EOS R7 outperforms the Sony a7 III with a more recent release year (2022) and a lower launch price of $1500, compared to the a7 III’s 2018 release and $2000 price tag. This makes the EOS R7 more budget-friendly and up-to-date in terms of technology.

The Sony a7 III, however, remains competitive with its smaller and more compact size, which may appeal to photographers who prioritize portability.

Taking these factors into account, the Canon EOS R7 offers better value and newer technology, while the Sony a7 III may be a suitable choice for those seeking a more compact option.

Canon EOS R7 vs Sony a7 III Overview and Optics

The Canon EOS R7 edges out the Sony a7 III in optics, with a score of 82/100 compared to 81/100. Both cameras share several specifications, including a CMOS sensor, image stabilization, and lens mounts designed for their respective brands (Canon RF and Sony FE).

The Canon EOS R7 surpasses the Sony a7 III with its higher megapixel count of 33, allowing for more detailed images. Its shooting speed of 15 frames per second is also faster than the Sony’s 10, providing better performance for capturing fast-moving subjects. Additionally, the EOS R7 has a slightly better DXOMARK score for its sensor, 97 compared to 96, indicating superior image quality.

Despite a lower overall score, the Sony a7 III has its strengths. Its full-frame sensor size is larger than the Canon’s APS-C sensor, resulting in better low-light performance and a shallower depth of field. This can be advantageous for photographers who prioritize those aspects in their work.

Regarding the processors, the Canon EOS R7 features the Digic X processor, while the Sony a7 III uses the Bionz X processor. Both processors contribute to the overall performance and image quality of their respective cameras.

In the end, the Canon EOS R7 slightly outperforms the Sony a7 III in terms of optics, with its higher megapixel count, faster shooting speed, and better sensor DXOMARK score. However, the Sony a7 III’s full-frame sensor size may appeal to photographers who prioritize low-light performance and depth of field. Each camera has its advantages, and the choice between them will depend on individual preferences and shooting needs.

The higher the number of megapixels, the more detail the cameras sensor can capture.
33 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.
6960 x 4640 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.
22.2 x 14.8 mm
23.8 x 35.6 mm
Sensor Format
Refers to the most commonly used sensor sizes.
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.
15 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
2,360,000 dots
2,359,296 dots

Canon EOS R7 vs Sony a7 III Video Performance

The Canon EOS R7 outperforms the Sony a7 III in video capabilities, scoring 91/100 compared to the Sony’s 70. Both cameras share some common specifications, such as the maximum video resolution of 4K and video dimensions of 3840 x 2160. However, the differences in their capabilities make the Canon EOS R7 the superior choice for video.

The Canon EOS R7 has a significant advantage in its maximum video frame rate, which is 120fps, while the Sony a7 III only offers 30fps. This higher frame rate allows the Canon EOS R7 to capture smoother and more detailed footage, especially in fast-paced or slow-motion scenes.

Taking all of these factors into account, the Canon EOS R7 is the clear winner in terms of video capabilities. Its higher frame rate and built-in time-lapse functionality give users more creative options and better overall performance. While the Sony a7 III may be a suitable choice for photographers who prioritize still images, those looking for exceptional video performance would be better served by the Canon EOS R7.

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 R7 vs Sony a7 III Features and Benefits

The Canon EOS R7 wins the features comparison with a score of 85/100, while the Sony a7 III scores 81/100. Both cameras share several features, such as a 3-inch screen, touchscreen capabilities, flip screen, lack of GPS, and inclusion of WIFI and Bluetooth.

The Canon EOS R7 outperforms the Sony a7 III in screen resolution, offering 1,620,000 dots compared to the Sony’s 921,600 dots. This higher resolution provides a clearer and sharper display, allowing for better image review and menu navigation.

On the other hand, the Sony a7 III still has strong features, matching the Canon EOS R7 in screen size, touchscreen, flip screen, WIFI, and Bluetooth. While it does not surpass the Canon EOS R7 in any specific area, the Sony a7 III remains a competitive option due to its overall strong feature set.

When considering these cameras, the Canon EOS R7 stands out as the winner in terms of features, mainly due to its superior screen resolution. However, the Sony a7 III remains a viable option for those who prioritize other aspects of a camera, as it matches many of the Canon EOS R7’s features. Ultimately, the choice between these two cameras will depend on individual preferences and specific needs.

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 R7 vs Sony a7 III Storage and Battery

The Canon EOS R7 and the Sony a7 III score well in storage and battery. Both cameras have two memory card slots and accept SD/SDHC/SDXC cards. However, the Sony a7 III also supports Memory Stick Duo/Pro Duo/Pro-HG Duo cards.

The EOS R7 has a battery life of 660 shots and uses an LP-E6NH battery. It also allows for USB charging. On the other hand, the Sony a7 III has a longer battery life of 750 shots, using an NP-FZ100 battery,.

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.
660 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.'
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.'
14.7 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

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Canon EOS R7 vs Sony a7 III Comparison image.

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