Sony a7R IIIA vs Canon EOS 5DS R

This is a full comparison between the cameras Sony a7R IIIA and Canon EOS 5DS R. We compare them by looking at the categories you see below.

Manufacturing

Sony a7R IIIA is manufacturered by Sony but Canon EOS 5DS R is from Canon. Both Sony and Canon are well known brands though.

Sony a7R IIIA were released 2021 and Canon EOS 5DS R was released 2015. That is a 6 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a7R IIIA 2021
Canon EOS 5DS R 2015

Type of camera

Sony a7R IIIA is a Mirrorless camera while Canon EOS 5DS R is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

Even though the camera sensors might be called differently they are both considered Full frame which means that the focal length of the lenses is not affected. There is no crop factor on any of these cameras and sensors.

Camera Focal length, 50mm f/1.8 **
Sony a7R IIIA 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Canon EOS 5DS R 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Sony)
Camera selection can affect the focal length (Canon)

Resolution

Sony a7R IIIA has a 42 MP (Megapixels) resolution while Canon EOS 5DS R has 51 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a7R IIIA 42 MP
42177408 pixels
7952 x 5304
Canon EOS 5DS R 51 MP
50320896 pixels
8688 x 5792

Canon EOS 5DS R has a 19 % larger resolution than Sony a7R IIIA. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Sony a7R IIIA has a larger ISO-range than Canon EOS 5DS R. Sony a7R IIIA has an ISO range that stretches from 100 to 32000 while Canon EOS 5DS R has 100 to 6400.

Camera ISO Range
Sony a7R IIIA 100-32000
Canon EOS 5DS R 100-6400

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Sony a7R IIIA
Lens compatibility chart for Canon EOS 5DS R

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a7R IIIA can shoot up to 10 pictures per seconds and Canon EOS 5DS R can shoot up to 5 pictures per seconds.

Camera FPS (Frames per second)
Sony a7R IIIA 10
Canon EOS 5DS R 5

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Sony a7R IIIA and Canon EOS 5DS R can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Canon EOS 5DS R weighs 930 gr (equal to 2.05 lb) which is 42% heavier than Sony a7R IIIA and its 657 gr (or 1.45 lb).

Camera Weight
Sony a7R IIIA 657 gr
1.45 lb
Canon EOS 5DS R 930 gr
2.05 lb

Sony a7R IIIA vs Canon EOS 5DS R Specs

Below you will find the complete and detailed technical specs for both Sony a7R IIIA and Canon EOS 5DS R, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product
Sony a7R IIIA
Canon EOS 5DS R
Name Sony a7R IIIA Canon EOS 5DS R
Manufacturer Sony Canon
Release Date and Price
Sony a7R IIIA
Canon EOS 5DS R
Release Year 2021 2015
Release Date 2021-04-07 2015-02-06
MSRP 3199 USD 4249 USD
Buy it today
Camera Type
Sony a7R IIIA
Canon EOS 5DS R
Camera Type Mirrorless DSLR
Sensor
Sony a7R IIIA
Canon EOS 5DS R
Sensor Size Full Frame (approx 36 x 24 mm) Full Frame (approx 36 x 24 mm)
Sensor Type BSI-CMOS CMOS
Resolution 7952 x 5304 pixels 8688 x 5792 pixels
Megapixels 42 MP 51 MP
Image Processor BIONZ X DUAL DIGIC 6
Image
Sony a7R IIIA
Canon EOS 5DS R
ISO Range 100 - 32000 100 - 6400
White Balance Presets 10 8
Custom White Balance Yes Yes
Image Stabilization Yes
(Sensor-Shift (5-axis))
No
Image Stabilization CIPA Rating 5.5 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Sony a7R IIIA
Canon EOS 5DS R
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Focus Points 399 61
Lens Mount Sony E

See Compatible Lenses
Canon EF

See Compatible Lenses
Focal Length Multiplier Full frame
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Full frame
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Sony a7R IIIA
Canon EOS 5DS R
Articulated LCD Tilting Fixed
Screen size 3” 3.2”
Screen dots 2360000 1040000
Touch screen Yes No
Screen type TFT LCD ClearView II TFT-LCD
Live view Yes Yes
Viewfinder Type Electronic Optical (pentaprism)
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.78x 0.71×
Viewfinder Resolution 3686400 N/A
Photography features
Sony a7R IIIA
Canon EOS 5DS R
Frames per second 10 fps 5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/8000 seconds
Built-in Flash No No
Built-in Flash Range N/A N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No Yes
Metering modes Multi
Center Weighted
Spot
Multi
Center Weighted
Spot
Partial
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Sony a7R IIIA
Canon EOS 5DS R
Video recording Yes Yes
Video format MPEG4
XAVC-S
AVCHD
H.264
Video resolution 1920 x 1080
3840 x 2160
1280 x 720
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Sony a7R IIIA
Canon EOS 5DS R
Memory Card SD/SDHC
Compact Flash
SD/SDHC
Connectivity
Sony a7R IIIA
Canon EOS 5DS R
HDMI Output Yes Yes
Microphone Port Yes Yes
Headphone Port Yes No
Wireless Yes
Built-in (802.11b/g/n + NFC + Bluetooth)
No
Remote Control Yes (wired, wireless, smartphone) Yes (Wired and wireless)
GPS No No
Body & Dimensions
Sony a7R IIIA
Canon EOS 5DS R
Enviromentally sealed Yes Yes
Battery Battery Pack Battery Pack
Battery Details NP-FZ100 lithium-ion battery and charger
LP-E6 lithium-ion battery & charger
Battery Life (CIPA) 650 shots 700 shots
Width 127 mm 152 mm
Height 96 mm 116 mm
Depth 74 mm 76 mm
Weight 657 gram 930 gram