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Canon EOS 5D Mark III vs EOS R6 Comparison

Storage & Battery

Canon EOS 5D Mark III

Canon EOS 5D Mark III

Canon EOS R6

Canon EOS r6
Canon EOS 5D Mark III
Canon EOS R6
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.
March 02, 2012
August 27, 2020
Camera Type
Camera Size
Camera Weight

The Canon EOS R6 emerges as the winner with a score of 80/100, while the Canon EOS 5D Mark III trails behind with a score of 65/100. Both cameras share common specifications including their manufacturer, Canon, and their full-frame sensors.

The EOS R6 outshines the 5D Mark III with its mirrorless design, which makes it lighter at 680g, and more compact with dimensions of 138 x 98 x 88mm. Additionally, it has a lower launch price of $2499 compared to the 5D Mark III’s $3499.

On the other hand, the 5D Mark III, a DSLR, has a heftier build weighing 950g and larger dimensions of 152 x 116 x 76mm. Despite its lower score, it remains a reliable choice for those who prefer DSLR cameras.

Taking these factors into account, the Canon EOS R6 offers better value with its more advanced design and affordability, while the Canon EOS 5D Mark III caters to DSLR enthusiasts.

Canon EOS 5D Mark III vs EOS R6 Overview and Optics

The Canon EOS R6 outperforms the Canon EOS 5D Mark III in optics, with a score of 79/100 compared to the 5D Mark III’s 67/100. Both cameras share some similar specifications, such as the CMOS sensor type, full-frame sensor size, and megapixels, with the 5D Mark III offering 22.3 and the R6 offering 20.1. Despite these similarities, the EOS R6 surpasses the 5D Mark III in several key aspects.

The R6’s higher score stems from its faster shooting speed of 20 frames per second (fps), compared to the 5D Mark III’s 6 fps. Additionally, the R6 features a more advanced Digic X processor, resulting in improved image processing capabilities. The R6 also boasts a higher DXOMARK sensor score of 90, compared to the 5D Mark III’s score of 81, which reflects the R6’s superior image quality. Furthermore, the R6 utilizes the Canon RF lens mount and offers image stabilization, while the 5D Mark III relies on the older Canon EF lens mount and lacks image stabilization.

However, the 5D Mark III does have a slight advantage in terms of megapixels, with 22.3 compared to the R6’s 20.1. This difference may benefit photographers who require larger image sizes for printing or cropping purposes.

Taking these factors into account, the Canon EOS R6 emerges as a more advanced and capable camera in terms of optics when compared to the Canon EOS 5D Mark III. The R6’s faster shooting speed, better processor, higher sensor score, and additional features such as image stabilization make it a superior choice for photographers seeking optimal image quality and performance. While the 5D Mark III offers a slightly higher megapixel count, the R6’s other advantages outweigh this minor edge.

The higher the number of megapixels, the more detail the cameras sensor can capture.
22.3 MP
20.1 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
5760 x 3840 px
5472 x 3648 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.
24 x 36 mm
23.9 x 35.9 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.
6 fps
20 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 EF
Canon RF
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
Digic 5+
Digic 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.
Optical (pentaprism)
Viewfinder Resolution
3,690,000 dots

Canon EOS 5D Mark III vs EOS R6 Video Performance

The Canon EOS R6 outperforms the Canon EOS 5D Mark III in video capabilities, scoring 91/100 compared to the 5D Mark III’s 56/100. Both cameras share some common specifications, but the EOS R6 offers significant improvements in video quality and features.

Both the Canon EOS 5D Mark III and the Canon EOS R6 have Full HD video resolution. However, the EOS R6 also offers 4K video resolution, with maximum dimensions of 3840 x 2160, compared to the 5D Mark III’s 1920 x 1080. This means the EOS R6 provides four times the video resolution of the 5D Mark III, resulting in sharper and more detailed footage.

The EOS R6 also boasts a higher maximum video frame rate at 120fps, whereas the 5D Mark III’s maximum is 60fps. This allows the EOS R6 to capture smoother slow-motion footage and gives users more creative flexibility when shooting videos.

Additionally, the Canon EOS R6 has built-in time-lapse functionality, which the 5D Mark III lacks. This feature enables users to easily create stunning time-lapse sequences without needing additional equipment or software.

The Canon EOS 5D Mark III does not have any specific advantages in video capabilities over the EOS R6. The R6’s superior video quality, higher frame rate, and built-in time-lapse functionality make it the clear winner in this comparison.

Considering these factors, the Canon EOS R6 is the better choice for videographers and content creators who need high-quality video features. The EOS 5D Mark III, while still a capable camera, falls short in comparison to the R6’s advanced video capabilities.

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.
Full HD
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.
1920 x 1080 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.
60 p
120 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 5D Mark III vs EOS R6 Features and Benefits

The Canon EOS R6 outperforms the Canon EOS 5D Mark III, scoring 85/100 in features compared to the 5D Mark III’s score of 59/100. Both cameras share a few specifications in common, such as screen size (3.2 inches for the 5D Mark III and 3 inches for the R6) and the lack of GPS. However, the R6 surpasses the 5D Mark III in several aspects that contribute to its higher score.

The EOS R6 has a higher screen resolution at 1,620,000 dots, while the 5D Mark III has 1,040,000 dots, providing the R6 with a sharper and clearer display. Moreover, the R6 has a touchscreen, making it more user-friendly and easier to navigate, in contrast to the 5D Mark III, which lacks this feature. The R6 also has a flip screen, allowing for more versatile shooting angles and better framing, unlike the 5D Mark III.

In terms of connectivity, the EOS R6 offers Wi-Fi and Bluetooth capabilities, enabling easy sharing and remote control of the camera. The 5D Mark III does not have these features, making it less convenient for wireless connectivity and file transfer.

Despite the lower score, the 5D Mark III has a slightly larger screen size, which some users may prefer. However, this advantage is minimal compared to the numerous benefits offered by the R6.

Given the comparison, it is evident that the Canon EOS R6 is a superior camera in terms of features when compared to the Canon EOS 5D Mark III. The R6’s higher resolution, touchscreen, flip screen, and wireless connectivity make it the clear winner. Although the 5D Mark III has a marginally bigger screen, it does not outweigh the advantages provided by the R6.

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.
1,040,000 dots
1,620,000 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 5D Mark III vs EOS R6 Storage and Battery

The Canon EOS 5D Mark III wins the storage and battery comparison with a score of 76/100, while the Canon EOS R6 scores 68/100. Both cameras have two memory card slots and accept SD, SDHC, and SDXC cards. The 5D Mark III also accepts Compact Flash and UDMA cards, giving it an advantage in storage versatility.

The 5D Mark III notably outperforms the R6 in battery life, with 950 shots per charge compared to the R6’s 360 shots. They both use LP-E6 batteries, but the R6 uses the upgraded LP-E6NH version. A key advantage for the R6 is its USB charging capability, which the 5D Mark III lacks.

Considering the storage and battery aspects, the 5D Mark III offers better battery life and storage options, while the R6 provides the convenience of USB charging.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC, Compact Flash, UDMA
SD / SDHC / SDXC (UHS-II compatible)
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.
950 shots
360 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 bits
24.2 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.'
11.7 EVs
14.3 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'

Canon EOS 5D Mark III vs EOS R6 – Our Verdict

Canon EOS 5D Mark III vs EOS R6 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 5D Mark III or the Canon EOS R6:

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