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Canon EOS R7 vs Olympus OM-D E-M1 Mark III Comparison

Storage & Battery

Canon EOS R7

Canon EOS R7 camera image

Olympus OM-D E-M1 Mark III

Olympus OM-D E-M1 Mark III Black Product Image
Canon EOS R7
Olympus OM-D E-M1 Mark III
OM-D E-M1 Mark 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 12, 2020
Camera Type
Camera Size
Camera Weight

The Canon EOS R7 outperforms the Olympus OM-D E-M1 Mark III with a score of 83/100 compared to 72/100. Both cameras are mirrorless and share similar dimensions, with the R7 measuring 132 x 90 x 92mm and the E-M1 Mark III at 134 x 91 x 69mm. The R7 is slightly heavier at 612g compared to the E-M1 Mark III’s 580g.

The Canon EOS R7 excels with its higher score, launched in 2022 at a lower price of $1500 compared to the E-M1 Mark III’s $1799 price tag from 2020. The R7’s better performance and more recent release make it a more attractive option for buyers.

On the other hand, the Olympus OM-D E-M1 Mark III has the advantage of being lighter by 32g, which could be beneficial for users prioritizing portability. However, considering the overall performance and price difference, the Canon EOS R7 stands out as the better choice between the two cameras.

Canon EOS R7 vs Olympus OM-D E-M1 Mark III Overview and Optics

The Canon EOS R7 outperforms the Olympus OM-D E-M1 Mark III in optics, scoring 82/100 compared to the Olympus’ 68/100. Both cameras share some common specifications, such as CMOS sensor type, image stabilization, and lens mounts compatible with their respective systems. However, there are notable differences that contribute to the Canon’s higher score.

The Canon EOS R7 boasts 33 megapixels, which is significantly higher than the Olympus’ 20 megapixels. This higher resolution provides more detail and better image quality. Moreover, the Canon EOS R7 has a superior DXOMARK sensor score of 97, compared to the Olympus’ 80, indicating better overall sensor performance. The Canon also features an APS-C sensor size, larger than the Olympus’ Micro Four Thirds sensor, resulting in better low-light performance and increased dynamic range.

On the other hand, the Olympus OM-D E-M1 Mark III has a faster shooting speed of 60 frames per second, compared to the Canon’s 15. This advantage allows for better action and sports photography. Additionally, the Olympus features a 4:3 aspect ratio, which some photographers may prefer for certain compositions or printing formats.

Despite the Olympus’ faster shooting speed and unique aspect ratio, the Canon EOS R7 emerges as the superior camera in terms of optics due to its higher resolution, better sensor performance, and larger sensor size. The choice between these two cameras ultimately depends on the photographer’s needs and preferences, but the Canon EOS R7 provides a clear advantage in image quality and overall optical performance.

The higher the number of megapixels, the more detail the cameras sensor can capture.
33 MP
20 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
5184 x 3888 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
17.4 x 13 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Micro Four Thirds
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
60 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
Micro 4/3
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
Digic X
TruePic IX
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
60 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
2,360,000 dots

Canon EOS R7 vs Olympus OM-D E-M1 Mark III Video Performance

The Canon EOS R7 outperforms the Olympus OM-D E-M1 Mark III in video capabilities, with a score of 91/100 as opposed to 83/100. Both cameras share some common specifications, such as 4K maximum video resolution and built-in time-lapse functionality. However, several factors contribute to the Canon EOS R7’s superior video performance.

Firstly, the Canon EOS R7 boasts a higher maximum video frame rate of 120fps compared to the Olympus OM-D E-M1 Mark III’s 60fps. This allows for smoother slow-motion footage and greater flexibility in post-production. Additionally, the Canon EOS R7’s max video dimensions are 3840 x 2160, providing crisp and detailed visuals.

On the other hand, the Olympus OM-D E-M1 Mark III has its own advantage in video dimensions, with a max resolution of 4096 x 2160. This slightly wider aspect ratio creates a more cinematic look, which some filmmakers might prefer. However, the lower frame rate limits the camera’s versatility in capturing fast-moving subjects and producing slow-motion effects.

In comparing the two cameras, the Canon EOS R7 emerges as the better choice for video capabilities due to its higher score, faster maximum frame rate, and crisp image quality. The Olympus OM-D E-M1 Mark III’s advantage in video dimensions may appeal to some users, but it does not outweigh the benefits offered by the Canon EOS R7. Therefore, those seeking a camera with superior video performance should opt for 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
4096 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
60 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 Olympus OM-D E-M1 Mark III Features and Benefits

The Canon EOS R7 emerges as the winner with a feature score of 85/100, while the Olympus OM-D E-M1 Mark III trails closely behind at 83/100. Both cameras share several specifications, including a 3-inch screen size, touchscreen capabilities, flip screen, absence of GPS, and the presence of WIFI and Bluetooth connectivity.

The Canon EOS R7 outperforms the Olympus OM-D E-M1 Mark III in screen resolution, boasting 1,620,000 dots compared to the Olympus’s 1,037,000 dots. This higher resolution provides a sharper and clearer image display, allowing for better image review and easier menu navigation.

On the other hand, the Olympus OM-D E-M1 Mark III still holds its ground with a slightly lower feature score. Although it doesn’t surpass the Canon EOS R7 in any specific category, it remains a strong competitor with its similar specifications. The difference in screen resolution may not be a significant factor for some users, depending on their preferences and requirements.

Taking these factors into account, the Canon EOS R7 stands out as the better camera in terms of features, particularly due to its superior screen resolution. However, the Olympus OM-D E-M1 Mark III remains a viable option for those who may not prioritize screen resolution and are looking for a camera with comparable features. Both cameras offer a range of capabilities suitable for various photography needs, with the Canon EOS R7 holding a slight advantage.

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
1,037,000 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 R7 vs Olympus OM-D E-M1 Mark III Storage and Battery

The Canon EOS R7 outperforms the Olympus OM-D E-M1 Mark III in storage and battery with a score of 79/100 compared to the latter’s 71/100. Both cameras share some common specifications, including two memory card slots and compatibility with SD, SDHC, and SDXC cards. They also both support USB charging.

The EOS R7 has an advantage in battery life, offering 660 shots per charge compared to the E-M1 Mark III’s 420 shots. Additionally, all of the R7’s card slots are UHS-II compatible, while only one slot on the E-M1 Mark III offers this compatibility. These factors contribute to the R7’s higher score in storage and battery.

On the other hand, the E-M1 Mark III still provides decent battery life and storage options despite its lower score. The two-slot memory card system and USB charging capability make it a reliable choice for photographers.

In comparing these cameras, the Canon EOS R7 takes the lead in storage and battery performance due to its longer battery life and full UHS-II compatibility. However, the Olympus OM-D E-M1 Mark III remains a solid option with its similar storage features and adequate battery life.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC (UHS-II compatible)
SD / SDHC / SDXC (UHS-II compatible on one slot)
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
420 shots
USB Charging
Sensor scores tested by DXOMARK

Alternatives to the Canon EOS R7 and Olympus OM-D E-M1 Mark III

Canon EOS R7 vs Olympus OM-D E-M1 Mark 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 R7 or the Olympus OM-D E-M1 Mark III:

User Scores
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