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Canon 850D vs Sony A7R III

The Canon EOS 850D (called Canon T8i in some regions) and the Sony Alpha A7R III are two digital cameras that were revealed to the public, respectively, in February 2020 and October 2017. The 850D is a DSLR, while the A7R III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (850D) and a full frame (A7R III) sensor. The Canon has a resolution of 24 megapixels, whereas the Sony provides 42.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon 850D
versus
Sony A7R III
Canon 850D   Sony A7R III
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Sony E mount lenses
24 MP – APS-C sensor 42.2 MP – Full Frame sensor
4K/24p Video 4K/30p Video
ISO 100-25,600 (100 - 51,200) ISO 100-32,000 (50 - 102,400)
Optical viewfinder Electronic viewfinder (3686k dots)
3.0" LCD – 1040k dots 3.0" LCD – 1440k dots
Swivel touchscreen Tilting touchscreen
7.5 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
800 shots per battery charge650 shots per battery charge
131 x 103 x 76 mm, 515 g 127 x 96 x 74 mm, 650 g
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Check 850D offers at
ebay.com
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Check A7R III offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 850D and the Sony Alpha A7R III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

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Body comparison

The physical size and weight of the Canon 850D and the Sony A7R III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Canon 850D vs Sony A7R III
Compare 850D versus A7R III top
Comparison 850D or A7R III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R III is notably smaller (10 percent) than the Canon 850D. However, the A7R III is markedly heavier (26 percent) than the 850D. It is noteworthy in this context that the A7R III is splash and dust-proof, while the 850D does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (850D) and the Sony FE Lens Catalog (A7R III). Mirrorless cameras, such as the A7R III, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 850D gets 800 shots out of its Canon LP-E17 battery, while the A7R III can take 650 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A7R III can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 850D 131 mm 103 mm 76 mm 515 g 800 n Feb 2020 749ebay.com
2.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199ebay.com
3.
 
Canon RP 133 mm 85 mm 70 mm 485 g 250 n Feb 2019 1,299 amazon.com
4.
 
Canon 250D 122 mm 93 mm 70 mm 449 g 1070 n Apr 2019 599 amazon.com
5.
 
Canon G5 X Mark II 111 mm 61 mm 46 mm 340 g 230 n Jul 2019 899ebay.com
6.
 
Canon G7 X Mark III 105 mm 61 mm 41 mm 304 g 235 n Jul 2019 749 amazon.com
7.
 
Canon 2000D 129 mm 101 mm 78 mm 475 g 500 n Feb 2018 449 amazon.com
8.
 
Canon 77D 131 mm 100 mm 76 mm 540 g 600 n Feb 2017 899ebay.com
9.
 
Canon 200D 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549ebay.com
10.
 
Canon 800D 131 mm 100 mm 76 mm 532 g 600 n Feb 2017 749ebay.com
11.
 
Canon 750D 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749ebay.com
12.
 
Canon 760D 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649ebay.com
13.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
14.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499ebay.com
15.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
16.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499ebay.com
17.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 850D was launched at a markedly lower price (by 77 percent) than the A7R III, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 850D features an APS-C sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 160 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 850D and Sony A7R III sensor measures

With 42.2MP, the A7R III offers a higher resolution than the 850D (24MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.72μm for the 850D) due to its larger sensor. However, the 850D is a much more recent model (by 2 years and 3 months) than the A7R III, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Canon 850D are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

Unlike the 850D, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Canon EOS 850D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the Sony Alpha A7R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.

In terms of underlying technology, the 850D is build around a CMOS sensor, while the A7R III uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

850D versus A7R III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 850D APS-C 24.0 6000 40004K/24p24.013.5187383
2.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
3.
 
Canon RP Full Frame 26.0 6240 41604K/30p24.311.9297785
4.
 
Canon 250D APS-C 24.0 6000 40004K/25p23.913.4179182
5.
 
Canon G5 X Mark II 1-inch 20.0 5472 36484K/30p22.212.458365
6.
 
Canon G7 X Mark III 1-inch 20.0 5472 36484K/30p22.212.458365
7.
 
Canon 2000D APS-C 24.0 6000 40001080/30p22.611.9100971
8.
 
Canon 77D APS-C 24.0 6000 40001080/60p23.613.397178
9.
 
Canon 200D APS-C 24.0 6000 40001080/60p23.613.4104179
10.
 
Canon 800D APS-C 24.0 6000 40001080/60p23.713.1158680
11.
 
Canon 750D APS-C 24.0 6000 40001080/30p22.712.091971
12.
 
Canon 760D APS-C 24.0 6000 40001080/30p22.612.091570
13.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
14.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
15.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
16.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
17.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7R III provides a faster frame rate than the 850D. It can shoot movie footage at 4K/30p, while the Canon is limited to 4K/24p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), while the 850D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the A7R III offers a wider field of view (100%) than the one in the 850D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7R III has a higher magnification (0.78x vs 0.51x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 850D and Sony A7R III along with similar information for a selection of comparators.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 850Doptical n3.0 / 1040 swivel Y 1/4000s 7.5/s Y n
2.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
3.
 
Canon RP2360 n3.0 / 1040 swivel Y 1/4000s 5.0/s n n
4.
 
Canon 250Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon G5 X Mark II2360 n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
6.
 
Canon G7 X Mark IIInone n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
7.
 
Canon 2000Doptical n3.0 / 920 fixed n 1/4000s 3.0/s Y n
8.
 
Canon 77Doptical Y3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
9.
 
Canon 200Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Canon 800Doptical n3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
11.
 
Canon 750Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
12.
 
Canon 760Doptical Y3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
13.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7R IV5760 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
17.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The 850D has one, while the A7R III does not. While the built-in flash of the 850D is not very powerful, it can at times be useful as a fill-in light.

The 850D has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A7R III does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7R III is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Canon 850D and the Sony A7R III both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The 850D writes its imaging data to SDXC cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the 850D only has one slot. The A7R III supports UHS-II cards (on its first slot), while the 850D can use UHS-I cards.

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS 850D and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 850DYstereo / monoY-mini2.0Y-Y
2.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
3.
 
Canon RPYstereo / monoYYmicro2.0Y-Y
4.
 
Canon 250DYstereo / monoY-mini2.0Y-Y
5.
 
Canon G5 X Mark II-stereo / mono--micro3.1Y-Y
6.
 
Canon G7 X Mark III-stereo / monoY-micro3.1Y-Y
7.
 
Canon 2000DYmono / mono--mini2.0YY-
8.
 
Canon 77DYstereo / monoY-mini2.0YYY
9.
 
Canon 200DYstereo / monoY-mini2.0YYY
10.
 
Canon 800DYstereo / monoY-mini2.0YYY
11.
 
Canon 750DYstereo / monoY-mini2.0YY-
12.
 
Canon 760DYstereo / monoY-mini2.0YY-
13.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
14.
 
Sony A7R IVYstereo / monoYYmicro3.1YYY
15.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
16.
 
Sony A9Ystereo / monoYYmicro2.0YYY
17.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
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It is notable that the A7R III has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The 850D lacks such a headphone port.

Studio photographers will appreciate that the Sony A7R III (unlike the 850D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 850D and the A7R III have been discontinued, but can regularly be found used on ebay. The A7R III was replaced by the Sony A7R IV, while the 850D does not have a direct successor. Further information on the features and operation of the 850D and A7R III can be found, respectively, in the Canon 850D Manual (free pdf) or the online Sony A7R III Manual.

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Review summary

So what conclusions can be drawn? Is the Canon 850D better than the Sony A7R III or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Canon EOS 850D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Less heavy: Is lighter (by 135g or 21 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (800 versus 650) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
  • More modern: Reflects 2 years and 3 months of technical progress since the A7R III launch.

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Arguments in favor of the Sony Alpha A7R III:

  • More detail: Has more megapixels (42.2 vs 24MP), which boosts linear resolution by 33%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • Better video: Provides higher movie framerates (4K/30p versus 4K/24p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.51x).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1040k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 7.5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More heavily discounted: Has been around for much longer (launched in October 2017).

If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (26 : 9 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

850D 09:26 A7R III

How about other alternatives? Do the specifications of the Canon 850D and the Sony A7R III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 850D or the A7R III perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 850D4/5+3/580/1004/53.5/5 Feb 2020 749ebay.com
2.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199ebay.com
3.
 
Canon RP4/5+4/5..4.5/54/5 Feb 2019 1,299 amazon.com
4.
 
Canon 250D4/5o4.5/579/1004/54/5 Apr 2019 599 amazon.com
5.
 
Canon G5 X Mark II4/5+4/582/100..4/5 Jul 2019 899ebay.com
6.
 
Canon G7 X Mark III..+ +4/581/1004/5.. Jul 2019 749 amazon.com
7.
 
Canon 2000D3/5o3.5/5..3.5/53.5/5 Feb 2018 449 amazon.com
8.
 
Canon 77D4.5/5..4/582/1004.5/54/5 Feb 2017 899ebay.com
9.
 
Canon 200D4/5+ +4/578/1004.5/54.5/5 Jun 2017 549ebay.com
10.
 
Canon 800D4.5/5..3.5/580/1004.5/54/5 Feb 2017 749ebay.com
11.
 
Canon 750D5/5....75/1004.5/54.5/5 Feb 2015 749ebay.com
12.
 
Canon 760D5/5+..77/1004.5/54.5/5 Feb 2015 649ebay.com
13.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
14.
 
Sony A7R IV5/5+4.5/591/1004.5/55/5 Jul 2019 3,499ebay.com
15.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
16.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499ebay.com
17.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Check 850D offers at
ebay.com
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Check A7R III offers at
ebay.com

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 850D vs Sony A7R III

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Canon 850D Sony A7R III
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Sony E mount lenses
    Launch Date February 2020 October 2017
    Launch Price USD 749 USD 3,199
    Sensor Specs Canon 850D Sony A7R III
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.3 x 14.9 mm 35.9 x 24.0 mm
    Sensor Area 332.27 mm2 861.6 mm2
    Sensor Diagonal 26.8 mm 43.2 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 24 Megapixels 42.2 Megapixels
    Image Resolution 6000 x 4000 pixels 7952 x 5304 pixels
    Pixel Pitch 3.72 μm 4.52 μm
    Pixel Density 7.22 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/24p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 100 - 32,000 ISO
    ISO Boost 100 - 51,200 ISO 50 - 102,400 ISO
    Image Processor DIGIC 8 BIONZ X
    DXO Sensor Quality (score) .. 100
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 14.7
    DXO Low Light (ISO) .. 3523
    Screen Specs Canon 850D Sony A7R III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.51x 0.78x
    Viewfinder Resolution 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 850D Sony A7R III
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 7.5 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations500 000 actuations
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Canon 850D Sony A7R III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.1
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Canon 850D Sony A7R III
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon LP-E17 Sony NP-FZ100
    Battery Life (CIPA)800 shots per charge650 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 131 x 103 x 76 mm
    (5.2 x 4.1 x 3.0 in)
    127 x 96 x 74 mm
    (5.0 x 3.8 x 2.9 in)
    Camera Weight 515 g (18.2 oz) 650 g (22.9 oz)
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