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Canon EOS 90D vs Sony a7 III Comparison

Storage & Battery

Canon EOS 90D

Canon 90D camera image

Sony a7 III

Sony A7 III camera
Canon EOS 90D
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.
October 28, 2019
February 27, 2018
Camera Type
Camera Size
Camera Weight

The Sony a7 III outperforms the Canon EOS 90D with a score of 81 compared to 67/100. Both cameras, released in 2018 and 2019 respectively, share similar specifications, such as their launch prices, $2000 for the Sony and $1199 for the Canon. They also have similar sizes, with the Canon measuring 141 x 105 x 77mm and weighing 701g, and the Sony measuring 127 x 96 x 74mm and weighing 650g.

The Sony a7 III’s higher score is due to its mirrorless technology, which provides superior image quality and performance. Additionally, its lighter weight makes it more portable and convenient for photographers.

However, the Canon EOS 90D, being a DSLR, has its own advantages, such as a more affordable price and a wider selection of lenses. This makes it a suitable option for those on a budget or looking to expand their lens collection.

Considering the specifications and scores, the Sony a7 III is the better choice for those seeking top-notch image quality and performance, while the Canon EOS 90D is a viable option for budget-conscious photographers and DSLR enthusiasts.

Canon EOS 90D vs Sony a7 III Overview and Optics

The Sony a7 III outperforms the Canon EOS 90D in optics with a score of 81/100, compared to the Canon’s 62/100. Both cameras share common specifications such as a CMOS sensor, 10 fps shooting speed, and lens mounts compatible with their respective brands.

The Sony a7 III excels with its full-frame sensor, which provides a larger surface area for capturing light and results in better image quality. Its DXOMARK sensor score of 96 is significantly higher than the Canon EOS 90D’s score of 58, indicating superior sensor performance. Additionally, the Sony a7 III features image stabilization, reducing the risk of blurry images due to camera shake.

On the other hand, the Canon EOS 90D has a higher megapixel count at 33, compared to the Sony a7 III’s 24.2 megapixels. This allows the Canon to capture more detail in images, which can be beneficial for large prints or heavy cropping. However, the Canon’s APS-C sensor is smaller than the Sony’s full-frame sensor, which may limit its low-light performance and dynamic range.

While the Canon EOS 90D offers more megapixels, the Sony a7 III’s full-frame sensor, higher DXOMARK score, and image stabilization make it the superior choice for optics. The Canon EOS 90D may be suitable for those who prioritize high-resolution images, but the Sony a7 III provides better overall image quality and performance.

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.
22.3 x 14.9 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.
10 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 EF/EF-S
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 8
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.
Optical (pentaprism)
Viewfinder Resolution
2,359,296 dots

Canon EOS 90D vs Sony a7 III Video Performance

The Canon EOS 90D emerges as the clear winner in video capabilities, scoring 91/100 compared to the Sony a7 III’s 70. Both cameras share some common specifications, such as a maximum video resolution of 4K and video dimensions of 3840 x 2160. However, the differences in their scores reveal the superior video performance of the Canon EOS 90D.

One of the primary advantages of the Canon EOS 90D is its higher maximum video frame rate of 120fps, which is significantly greater than the Sony a7 III’s 30fps. This allows the Canon EOS 90D to capture smoother and more detailed slow-motion footage, making it ideal for videographers seeking versatility and precision.

On the other hand, the Sony a7 III still offers solid video performance, sharing the same 4K resolution and video dimensions as the Canon EOS 90D. While it may not excel in frame rate or time-lapse capabilities, the Sony a7 III remains a reliable option for those seeking high-quality video output.

Taking these factors into account, the Canon EOS 90D outshines the Sony a7 III in terms of video capabilities, thanks to its higher frame rate and built-in time-lapse functionality. While the Sony a7 III still delivers respectable performance, the Canon EOS 90D provides greater versatility and creative potential for videographers looking to push the boundaries of their craft.

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.
MPEG-4, H.264

Canon EOS 90D vs Sony a7 III Features and Benefits

The Canon EOS 90D takes the lead in features with a score of 83/100, while the Sony a7 III trails closely with a score of 81/100. Both cameras share several specifications, such as a 3-inch screen size, touchscreen functionality, flip screens, and the absence of GPS. Additionally, both models come equipped with WIFI and Bluetooth capabilities.

The Canon EOS 90D stands out with its higher screen resolution of 1,040,000 dots, compared to the Sony a7 III’s 921,600 dots. This difference means that the EOS 90D’s screen displays sharper and clearer images, making it easier for users to review their shots and navigate the camera’s settings.

Despite its slightly lower feature score, the Sony a7 III remains a strong competitor. Both cameras have similar specifications, and the 2-point difference in the score does not significantly impact the overall performance of the Sony a7 III. In some aspects, user preferences and specific needs may determine which camera is better suited for them.

When comparing the Canon EOS 90D and the Sony a7 III, it is important to consider individual requirements and preferences alongside the feature scores. The EOS 90D holds a slight advantage with its higher screen resolution, but the similar specifications of both cameras make them strong contenders in the market. Users should weigh the importance of screen resolution against other factors, such as price and compatibility with existing equipment, before making a final decision.

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
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 90D vs Sony a7 III Storage and Battery

The Sony a7 III outperforms the Canon EOS 90D in storage and battery with a score of 81, compared to the Canon’s 48/100. Both cameras accept SD, SDHC, and SDXC memory cards, but the Sony a7 III also supports Memory Stick Duo, Pro Duo, and Pro-HG Duo cards. Furthermore, the Sony a7 III has two memory card slots, while the Canon EOS 90D only has one.

The Canon EOS 90D has a longer battery life, providing 1300 shots with its LP-E6N battery, whereas the Sony a7 III’s NP-FZ100 battery lasts for 750 shots.

Despite its shorter battery life, the Sony a7 III’s additional memory card slot and compatibility with various memory card types make it the superior choice for storage and battery. On the other hand, the Canon EOS 90D’s longer battery life is advantageous for extended shooting sessions. Ultimately, the Sony a7 III’s versatility and storage capabilities give it the edge in this comparison.

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.
1,300 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

Alternatives to the Canon EOS 90D and Sony a7 III

Canon EOS 90D vs Sony a7 III Comparison image.

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