Sony a7R IIIA vs Canon EOS 850D
This is a full comparison between the cameras Sony a7R IIIA and Canon EOS 850D. We compare them by looking at the categories you see below.
Manufacturing
Sony a7R IIIA is manufacturered by Sony but Canon EOS 850D is from Canon. Both Sony and Canon are well known brands though.
Sony a7R IIIA were released 2021 and Canon EOS 850D was released 2020. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.| Camera | Released |
| Sony a7R IIIA | 2021 |
| Canon EOS 850D | 2020 |
Type of camera
Sony a7R IIIA is a Mirrorless camera while Canon EOS 850D is a DSLR camera. More information about their differences will come soon.
Sensors / crop factor
These cameras have different sensors. Sony a7R IIIA has a "Sony Full Frame"-sensor while Canon EOS 850D has a "Canon APS-C"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.
| Camera | Focal length, 50mm f/1.8 ** |
| Sony a7R IIIA | 50 mm Full-frame sensor No crop factor/focal length multiplier |
| Canon EOS 850D | 80 mm Canon APS-C sensor Crop factor/focal length multiplier by * 1.6 |
** 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 850D has 24 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 850D |
24 MP
24000000 pixels 6000 x 4000 |
Sony a7R IIIA has a 76 % larger resolution than Canon EOS 850D. 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 850D. Sony a7R IIIA has an ISO range that stretches from 100 to 32000 while Canon EOS 850D has 100 to 25600.
| Camera | ISO Range |
| Sony a7R IIIA | 100-32000 |
| Canon EOS 850D | 100-25600 |
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 850D
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 850D can shoot up to 7,5 pictures per seconds.
| Camera | FPS (Frames per second) |
| Sony a7R IIIA | 10 |
| Canon EOS 850D | 7,5 |
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 850D 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.
Sony a7R IIIA weighs 657 gr (equal to 1.45 lb) which is 28% heavier than Canon EOS 850D and its 515 gr (or 1.14 lb).
| Camera | Weight |
| Sony a7R IIIA | 657 gr 1.45 lb |
| Canon EOS 850D | 515 gr 1.14 lb |
Sony a7R IIIA vs Canon EOS 850D Specs
Below you will find the complete and detailed technical specs for both Sony a7R IIIA and Canon EOS 850D, 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 850D |
| Name | Sony a7R IIIA | Canon EOS 850D |
| Manufacturer | Sony | Canon |
Release Date and Price |
Sony a7R IIIA |
Canon EOS 850D |
| Release Year | 2021 | 2020 |
| Release Date | 2021-04-07 | 2020-02-12 |
| MSRP | 3199 USD | 749 USD |
| Buy it today |
|
|
Camera Type |
Sony a7R IIIA |
Canon EOS 850D |
| Camera Type | Mirrorless | DSLR |
Sensor |
Sony a7R IIIA |
Canon EOS 850D |
| Sensor Size | Full Frame (approx 36 x 24 mm) | APS-C (approx 22.3 x 14.9 mm) |
| Sensor Type | BSI-CMOS | CMOS |
| Resolution | 7952 x 5304 pixels | 6000 x 4000 pixels |
| Megapixels | 42 MP | 24 MP |
| Image Processor | BIONZ X | DIGIC 8 |
Image |
Sony a7R IIIA |
Canon EOS 850D |
| ISO Range | 100 - 32000 | 100 - 25600 |
| White Balance Presets | 10 | 6 |
| 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 850D |
| 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 Touch Face Detection LiveView |
| Focus Points | 399 | 45 |
| Lens Mount |
Sony E See Compatible Lenses |
Canon EF Canon EF-S 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 |
APS-C Sensor 1.6x multiplier Example: 24 mm becomes 38 mm 50 mm becomes 80 mm 100 mm becomes 160 mm 200 mm becomes 320 mm |
Screen & Viewfinder |
Sony a7R IIIA |
Canon EOS 850D |
| Articulated LCD | Tilting | Fully articulated |
| Screen size | 3” | 3” |
| Screen dots | 2360000 | 1040000 |
| Touch screen | Yes | Yes |
| Screen type | TFT LCD | TFT LCD |
| Live view | Yes | Yes |
| Viewfinder Type | Electronic | Optical (pentamirror) |
| Viewfinder Coverage | 100% | 95% |
| Viewfinder Magnification | 0.78x | 0.82× (0.51× 35mm equiv.) |
| Viewfinder Resolution | 3686400 | 0 |
Photography features |
Sony a7R IIIA |
Canon EOS 850D |
| Frames per second | 10 fps | 7,5 fps |
| Minimum Shutter Speed | 30 seconds | 30 seconds |
| Maximum Shutter Speed | 1/8000 seconds | 1/4000 seconds |
| Built-in Flash | No | Yes |
| Built-in Flash Range | N/A | 4 meters |
| 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) | +/- 3 (at 1/3 EV, 1/2 EV steps) |
Videography features |
Sony a7R IIIA |
Canon EOS 850D |
| Video recording | Yes | Yes |
| Video format |
MPEG4 XAVC-S AVCHD |
MPEG4 H.264 |
| Video resolution |
1920 x 1080 3840 x 2160 |
1920 x 1080 3840 x 2160 |
| Built-in Microphone | Yes | Yes |
| Built-in Speakers | Yes | Yes |
Storage |
Sony a7R IIIA |
Canon EOS 850D |
| Memory Card |
SD/SDHC |
SD/SDHC |
Connectivity |
Sony a7R IIIA |
Canon EOS 850D |
| HDMI Output | Yes | Yes |
| Microphone Port | Yes | Yes |
| Headphone Port | Yes | No |
| Wireless |
Yes Built-in (802.11b/g/n + NFC + Bluetooth) |
Yes Built-in (802.11b/g/n + Bluetooth) |
| Remote Control | Yes (wired, wireless, smartphone) | Yes (via wireless remote or smartphone) |
| GPS | No | No |
Body & Dimensions |
Sony a7R IIIA |
Canon EOS 850D |
| Enviromentally sealed | Yes | No |
| Battery | Battery Pack | Battery Pack |
| Battery Details |
NP-FZ100 lithium-ion battery and charger
|
LP-E17 lithium-ion battery & charger
|
| Battery Life (CIPA) | 650 shots | 800 shots |
| Width | 127 mm | 131 mm |
| Height | 96 mm | 103 mm |
| Depth | 74 mm | 76 mm |
| Weight | 657 gram | 515 gram |