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Canon EOS 5D Mark III vs Sony a7S II Comparison

Storage & Battery

Canon EOS 5D Mark III

Canon EOS 5D Mark III

Sony a7S II

Sony A7S II mirrorless camera image
Canon EOS 5D Mark III
Sony a7S II
a7S II
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 11, 2015
Camera Type
Camera Size
Camera Weight

The Canon EOS 5D Mark III outperforms the Sony a7S II with a score of 65/100 compared to 60/100. Both cameras share some common specifications, such as being released in the early 2010s, with the Canon in 2012 and the Sony in 2015, and having similar launch prices of $3499 and $3000, respectively.

The Canon EOS 5D Mark III, a DSLR camera, has a larger size (152 x 116 x 76mm) and is heavier (950g) compared to the Sony a7S II, a mirrorless camera, with dimensions of 127 x 96 x 60mm and a weight of 627g. This difference in size and weight makes the Canon more robust and durable, while the Sony is more portable and lightweight.

Despite the lower score, the Sony a7S II still has its advantages, such as being more compact and easier to carry around. Choosing between these cameras depends on individual preferences and priorities, whether it’s durability and sturdiness or portability and convenience.

Canon EOS 5D Mark III vs Sony a7S II Overview and Optics

The Canon EOS 5D Mark III outperforms the Sony a7S II in optics with a score of 67/100 compared to the Sony’s 66/100. Both cameras have a CMOS sensor, a full-frame sensor size, and use their respective lens mounts: Canon EF for the 5D Mark III and Sony FE for the a7S II.

The 5D Mark III has a higher megapixel count at 22.3, compared to the a7S II’s 12.2 megapixels. This allows the Canon to capture more detail in images. Additionally, the 5D Mark III has a faster shooting speed of 6 frames per second, compared to the Sony’s 5 frames per second. This makes the Canon more suitable for capturing fast-moving subjects. The Digic 5+ processor in the 5D Mark III is also a strong point, contributing to its overall performance.

However, the Sony a7S II has a higher DXOMARK sensor score of 85, compared to the Canon’s 81. This means the Sony’s sensor performs better in terms of dynamic range, color depth, and low-light capabilities. The a7S II also has built-in image stabilization, which the 5D Mark III lacks. This feature helps reduce camera shake, resulting in sharper images.

Taking these factors into account, the Canon EOS 5D Mark III has advantages in megapixel count, shooting speed, and processing power, making it a strong choice for detailed images and fast-paced photography. On the other hand, the Sony a7S II excels in sensor performance and image stabilization, making it a better option for low-light situations and handheld shooting.

The higher the number of megapixels, the more detail the cameras sensor can capture.
22.3 MP
12.2 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
4240 x 2832 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
23.8 x 35.8 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
5 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
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 5+
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 5D Mark III vs Sony a7S II Video Performance

The Sony a7S II and the Canon EOS 5D Mark III have a tie in video scores, both achieving a 56/100. Despite the identical scores, each camera has its strengths and weaknesses in video capabilities.

Both cameras lack built-in time-lapse functionality. However, the Sony a7S II surpasses the Canon EOS 5D Mark III in terms of maximum video resolution, offering 4K (3840 x 2160) compared to the Canon’s Full HD (1920 x 1080). This means that the Sony a7S II can produce videos with higher detail and clarity.

On the other hand, the Canon EOS 5D Mark III has an advantage in maximum video frame rate, reaching 60fps, while the Sony a7S II can only achieve 30fps. This higher frame rate allows the Canon to capture smoother and more fluid motion in videos, particularly useful for fast-moving subjects or slow-motion effects.

In conclusion, the Sony a7S II excels in video resolution, providing 4K quality for more detailed and visually impressive videos. Conversely, the Canon EOS 5D Mark III offers a higher frame rate, delivering smoother motion capture. Both cameras have their unique benefits, and the choice between them will depend on the specific video requirements of the user.

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 Sony a7S II Features and Benefits

The Canon EOS 5D Mark III wins in the features comparison with a score of 59/100, while the Sony a7S II scores 57/100. Both cameras share some common specifications, such as the lack of a touchscreen, GPS, and Bluetooth.

The Canon EOS 5D Mark III has a larger screen size, measuring 3.2 inches compared to the Sony a7S II’s 3-inch screen. However, the Sony a7S II has a higher screen resolution, with 1,228,800 dots compared to the Canon’s 1,040,000 dots. Despite the difference in resolution, the larger screen size of the Canon EOS 5D Mark III provides a better viewing experience.

The Sony a7S II outshines the Canon EOS 5D Mark III in two aspects: it has a flip screen and built-in Wi-Fi. The flip screen allows for more versatile shooting angles, which is especially useful for videographers. The built-in Wi-Fi enables easy image transfer and remote control of the camera using a smartphone or tablet.

While both cameras have their strengths and weaknesses, the Canon EOS 5D Mark III’s larger screen size gives it an edge over the Sony a7S II. However, the Sony a7S II’s flip screen and Wi-Fi capabilities make it a more versatile option for those who value flexibility in shooting and connectivity. Each camera excels in different areas, and the choice depends on the specific needs and preferences of the photographer.

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
1,228,800 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 Sony a7S II Storage and Battery

The Canon EOS 5D Mark III outperforms the Sony a7S II in storage and battery, scoring 76/100 compared to Sony’s 21/100. Both cameras accept SD/SDHC/SDXC memory cards, but the Canon 5D Mark III also supports Compact Flash and UDMA, while the Sony a7S II accommodates Memory Stick Duo/Pro Duo/Pro-HG Duo. Additionally, the Canon 5D Mark III has two memory card slots, compared to the Sony a7S II’s single slot.

In terms of battery life, the Canon 5D Mark III is superior with 950 shots per charge, using the LP-E6 battery type. The Sony a7S II, on the other hand, only offers 370 shots per charge with its NP-FW50 battery. Neither camera has USB charging capabilities.

The Canon EOS 5D Mark III clearly outshines the Sony a7S II in the storage and battery department, offering greater memory card compatibility, an extra memory card slot, and significantly longer battery life. The Sony a7S II does not have any advantages in this category. These differences make the Canon 5D Mark III the better choice for extended shooting sessions and flexibility in storage options.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC, Compact Flash, UDMA
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.
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
23.6 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
13.3 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 Sony a7S II – Our Verdict

Canon EOS 5D Mark III vs Sony a7S II 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 Sony a7S II:

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