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Canon EOS 5D Mark III vs EOS R Comparison

Storage & Battery

Canon EOS 5D Mark III

Canon EOS 5D Mark III

Canon EOS R

Canon EOS ARE Camera image
Canon EOS 5D Mark III
Canon EOS R
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
September 05, 2018
Camera Type
Camera Size
Camera Weight

The Canon EOS R outperforms the Canon EOS 5D Mark III with a score of 74/100 compared to the latter’s 65/100. Both cameras share some similarities, such as being part of the Canon EOS series and having a full-frame sensor. However, the EOS R, a mirrorless camera, has several advantages. It is lighter, weighing 485g compared to the 5D Mark III’s 950g, and more compact, with dimensions of 136 x 98 x 84mm versus the 5D Mark III’s 152 x 116 x 76mm. Moreover, the EOS R offers a lower launch price of $2300, while the 5D Mark III was initially priced at $3499.

On the other hand, the 5D Mark III, a DSLR camera, has its own benefits. It was released in 2012, providing users with a longer track record and more established reputation. Despite having a higher score, the EOS R does not necessarily make the 5D Mark III obsolete. Both cameras serve different purposes and cater to different preferences. Ultimately, the choice between the Canon EOS R and Canon EOS 5D Mark III depends on the individual photographer’s needs and priorities.

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

The Canon EOS R emerges as the winner in optics with a score of 73/100, outperforming the Canon EOS 5D Mark III, which scored 67/100. Both cameras share some common specifications, including a CMOS sensor, full-frame sensor size, and an absence of image stabilization.

The EOS R excels with its higher megapixel count of 30.3, compared to the 5D Mark III’s 22.3 megapixels. This increased resolution allows for more detailed and sharper images. Additionally, the EOS R boasts a superior shooting speed of 8 frames per second versus the 5D Mark III’s 6 frames per second, enabling better capture of fast-moving subjects. Furthermore, the EOS R’s Digic 8 processor and higher DXOMARK sensor score of 89 contribute to improved overall image quality and performance.

However, the 5D Mark III has its advantages as well, particularly in terms of lens compatibility. The camera uses the Canon EF lens mount, which supports a vast range of lenses. On the other hand, the EOS R utilizes the newer Canon RF mount, which has a more limited lens selection at present.

In terms of optics, the Canon EOS R outperforms the 5D Mark III with its higher resolution, faster shooting speed, and better overall image quality. Nevertheless, the 5D Mark III may still appeal to those who prioritize lens compatibility and the availability of a wider selection of lenses.

The higher the number of megapixels, the more detail the cameras sensor can capture.
22.3 MP
30.3 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
6720 x 4480 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
24 x 36 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
8 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 8
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 R Video Performance

The Canon EOS R outperforms the Canon EOS 5D Mark III in terms of video capabilities, scoring 70 out of 100 compared to the 5D Mark III’s score of 56. Both cameras share some common specifications, such as the ability to record video at high frame rates. However, the EOS R has several advantages over the 5D Mark III, which contribute to its higher score.

One of the key differences between the two cameras is their maximum video resolutions. The EOS R can record 4K video with dimensions of 3840 x 2160, while the 5D Mark III is limited to Full HD with dimensions of 1920 x 1080. This means that the EOS R can capture more detail in its videos, making it a better choice for those who prioritize video quality. Additionally, the EOS R has built-in time-lapse functionality, which allows users to create stunning time-lapse videos without the need for additional equipment or software.

Despite these advantages, the 5D Mark III does have one edge over the EOS R: its maximum video frame rate. The 5D Mark III can record video at up to 60fps, while the EOS R is limited to 30fps. This higher frame rate allows for smoother video playback and can be beneficial for certain applications, such as sports or action photography.

Taking all of these factors into consideration, the Canon EOS R is the clear winner in terms of video capabilities. Its higher resolution and built-in time-lapse functionality make it a more versatile option for videographers. However, the 5D Mark III’s higher frame rate may still be appealing to some users, depending on their specific needs.

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
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 5D Mark III vs EOS R Features and Benefits

The Canon EOS R outperforms the Canon EOS 5D Mark III in terms of features, scoring 87 out of 100, compared to the 5D Mark III’s 59. Both cameras share some common specifications, such as a 3.2-inch screen size and the lack of GPS. However, the EOS R surpasses the 5D Mark III in several aspects that contribute to its higher score.

The EOS R boasts a significantly higher screen resolution of 2,100,000 dots, compared to the 5D Mark III’s 1,040,000 dots. This results in a sharper and clearer display, which is essential for reviewing photos and navigating menus. Additionally, the EOS R features a touchscreen, making it more intuitive and user-friendly. The flip screen on the EOS R allows for greater flexibility when composing shots, especially in challenging angles or for vlogging purposes.

Connectivity is another area where the EOS R outshines the 5D Mark III. The EOS R is equipped with both Wi-Fi and Bluetooth capabilities, allowing for seamless photo transfers and remote camera control via compatible devices. The 5D Mark III lacks these features, which may limit its usability for some users.

Despite the lower score, the 5D Mark III remains a reliable camera for specific purposes. It may be preferred by those who prioritize a simpler interface without touchscreen functionality, or those who do not require advanced connectivity options.

By examining the features of both cameras, it is clear that the Canon EOS R offers a more advanced and versatile experience for users. The EOS R’s higher screen resolution, touchscreen, flip screen, and connectivity options contribute to its superior score, making it a better choice for photographers seeking these features. The 5D Mark III, while lacking in these areas, may still suit the needs of users who prefer simplicity over advanced functionality.

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
2,100,000 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 R Storage and Battery

The Canon EOS 5D Mark III outperforms the Canon EOS R in storage and battery with a score of 76/100 compared to the latter’s 35/100. Both cameras share similarities, such as accepting SD, SDHC, and SDXC memory cards. However, the 5D Mark III has two memory card slots, while the EOS R has only one, which is UHS-II compatible.

The 5D Mark III also boasts a longer battery life, providing 950 shots per charge with its LP-E6 battery type. In contrast, the EOS R offers 370 shots using an LP-E6N battery. Despite this advantage, the EOS R does have USB charging capabilities, which the 5D Mark III lacks.

Considering these factors, the Canon EOS 5D Mark III is superior in storage and battery life, offering more memory card slots and longer shooting time. However, the Canon EOS R provides the convenience of USB charging, which may appeal to some users.

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
370 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
24.5 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
13.5 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

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

Canon EOS 5D Mark III vs EOS R Comparison image.

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