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Canon R3 vs Sony A7S

The Canon EOS R3 and the Sony Alpha A7S are two professional cameras that were officially introduced, respectively, in September 2021 and April 2014. Both the R3 and the A7S are mirrorless interchangeable lens cameras that are equipped with a full frame sensor. The Canon has a resolution of 24 megapixels, whereas the Sony provides 12 MP.

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

Headline Specifications
Canon R3
versus
Sony A7S
Canon R3   Sony A7S
Mirrorless system camera Mirrorless system camera
Canon RF mount lenses Sony E mount lenses
24 MP – Full Frame sensor 12 MP – Full Frame sensor
6K/60p Video 1080/60p Video
ISO 100-51,200 (50 - 204,800) ISO 100-102,400 (50 - 409,600)
Electronic viewfinder (5760k dots) Electronic viewfinder (2400k dots)
3.2" LCD – 4150k dots 3.0" LCD – 921k dots
Swivel touchscreen Tilting screen (no touchscreen)
12 shutter flaps per second 5 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
760 shots per battery charge380 shots per battery charge
150 x 143 x 87 mm, 1015 g 127 x 94 x 48 mm, 489 g
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Check R3 price at
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ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R3 and the Sony Alpha A7S? 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 R3 and the Sony A7S 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 size dimensions are rounded to the nearest millimeter.

Size Canon R3 vs Sony A7S
Compare R3 versus A7S top
Comparison R3 or A7S rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S is considerably smaller (44 percent) than the Canon R3. Moreover, the A7S is substantially lighter (52 percent) than the R3. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the R3 gets 760 shots out of its Canon LP-E19 battery, while the A7S can take 380 images on a single charge of its Sony NP-FW50 power pack. As can be seen in the images above, the R3 has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the A7S, Sony provides the VG-C1EM vertical grip as an optional accessory (see here on ebay). The battery packs of both cameras can be charged via USB, 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. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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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 R3 150 mm 143 mm 87 mm 1015 g 760 Y Sep 2021 5,999 amazon.com
2.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499ebay.com
3.
 
Canon R6 Mark II 138 mm 98 mm 88 mm 670 g 450 Y Nov 2022 2,499 amazon.com
4.
 
Canon 1D X Mark III 158 mm 168 mm 83 mm 1440 g 2850 Y Jan 2020 6,499 amazon.com
5.
 
Canon R5 138 mm 98 mm 88 mm 738 g 320 Y Jul 2020 3,899 amazon.com
6.
 
Canon R6 138 mm 98 mm 88 mm 680 g 360 Y Jul 2020 2,499 amazon.com
7.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999ebay.com
8.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499ebay.com
9.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499ebay.com
10.
 
Leica SL2-S 146 mm 107 mm 83 mm 931 g 510 Y Dec 2020 4,895 amazon.com
11.
 
Nikon Df 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 2,749ebay.com
12.
 
Sony ZV-E1 121 mm 72 mm 54 mm 483 g 570 Y Mar 2023 2,199 amazon.com
13.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
14.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699ebay.com
15.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
16.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 1,999ebay.com
17.
 
Sony A900 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 2,999ebay.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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The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A7S was launched at a markedly lower price (by 58 percent) than the R3, 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. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A7S is 1 percent smaller. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon R3 and Sony A7S sensor measures

With 24MP, the R3 offers a higher resolution than the A7S (12MP), but the R3 has smaller individual pixels (pixel pitch of 6.00μm versus 8.45μm for the A7S). However, the R3 is a much more recent model (by 7 years and 5 months) than the A7S, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the Canon R3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the R3 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Sony A7S are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The R3 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS R3 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.

In terms of underlying technology, the R3 is build around a Stacked BSI-CMOS sensor, while the A7S uses a 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.

R3 versus A7S MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under review, the R3 has a notably higher overall DXO score than the A7S (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.1 bits higher color depth, 1.5 EV in additional dynamic range, and 0.1 stops in additional low light sensitivity. 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 R3 Full Frame 24.0 6000 40006K/60p25.014.7408696
2.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
3.
 
Canon R6 Mark II Full Frame 24.0 6000 40004k/60p25.414.6315496
4.
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p24.214.5324891
5.
 
Canon R5 Full Frame 44.8 8192 54648K/30p25.314.6304295
6.
 
Canon R6 Full Frame 20.0 5472 36484k/60p24.214.3339490
7.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
8.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
9.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
10.
 
Leica SL2-S Full Frame 24.0 6000 40004K/60p25.214.1350495
11.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
12.
 
Sony ZV-E1 Full Frame 12.0 4240 28324K/60p25.414.6318196
13.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
14.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
15.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
16.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
17.
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the R3 provides a higher video resolution than the A7S. It can shoot video footage at 6K/60p, while the Sony is limited to 1080/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the R3 offers a substantially higher resolution than the one in the A7S (5760k vs 2400k dots). The table below summarizes some of the other core capabilities of the Canon R3 and Sony A7S in connection with corresponding information for a sample of similar cameras.

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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 R35760 Y3.2 / 4150 swivel Y 1/8000s 12.0/s n Y
2.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0/s n n
3.
 
Canon R6 Mark II3690 n3.0 / 1620 swivel Y 1/8000s 12.0/s n Y
4.
 
Canon 1D X Mark IIIoptical Y3.2 / 2100 fixed Y 1/8000s 20.0/s n n
5.
 
Canon R55760 Y3.2 / 2100 swivel Y 1/8000s 12.0/s n Y
6.
 
Canon R63690 n3.0 / 1620 swivel Y 1/8000s 12.0/s n Y
7.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
8.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0/s n n
9.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9/s n n
10.
 
Leica SL2-S5760 Y3.2 / 2100 fixed Y 1/8000s 20.0/s n Y
11.
 
Nikon Dfoptical Y3.2 / 921 fixed n 1/4000s 5.5/s n n
12.
 
Sony ZV-E1none n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
13.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
15.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
16.
 
Sony A850optical Y3.0 / 922 fixed n 1/8000s 3.0/s n Y
17.
 
Sony A900optical Y3.0 / 922 fixed 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 feature that is present on the R3, but is missing on the A7S is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The R3 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 A7S 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, both cameras under consideration feature an 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 R3 has 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 R3 writes its imaging data to CFexpress (type B) or SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The R3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7S only has one slot. The R3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the A7S can use UHS-I cards (up to 104 MB/s).

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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 R3 and Sony Alpha A7S 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 R3Ystereo / monoYYmicro3.2Y-Y
2.
 
Sony A7SYstereo / monoYYmicro2.0YY-
3.
 
Canon R6 Mark IIYstereo / monoYYmicro3.2Y-Y
4.
 
Canon 1D X Mark IIIYmono / monoYYmini3.1Y-Y
5.
 
Canon R5Ymono / monoYYmicro3.2Y-Y
6.
 
Canon R6Ymono / monoYYmicro3.2Y-Y
7.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
8.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
9.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
10.
 
Leica SL2-SYstereo / monoYYfull3.2Y-Y
11.
 
Nikon DfY- / ---mini2.0---
12.
 
Sony ZV-E1Ystereo / monoYYmicro3.2Y-Y
13.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A7Ystereo / monoYYmicro2.0YY-
15.
 
Sony A7RYstereo / monoYYmicro2.0YY-
16.
 
Sony A850Y- / ---mini2.0---
17.
 
Sony A900Y- / ---mini2.0---
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Studio photographers will appreciate that the Canon R3 (unlike the A7S) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The R3 is a recent model that features in the current product line-up of Canon. In contrast, the A7S has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the A7S was succeeded by the Sony A7S II. Further information on the features and operation of the R3 and A7S can be found, respectively, in the Canon R3 Manual (free pdf) or the online Sony A7S Manual.

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Review summary

So how do things add up? Is the Canon R3 better than the Sony A7S or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Canon EOS R3:

  • More detail: Offers more megapixels (24 vs 12MP) with a 41% higher linear resolution.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (1.1 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (1.5 EV of extra DR).
  • Better video: Provides higher definition movie capture (6K/60p vs 1080/60p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2400k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.71x).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (4150k vs 921k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (760 versus 380) on a single battery charge.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • 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 modern: Reflects 7 years and 5 months of technical progress since the A7S launch.

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Advantages of the Sony Alpha A7S:

  • More compact: Is smaller (127x94mm vs 150x143mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 526g or 52 percent) and is thus easier to take along.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in April 2014).

If the number of relative strengths (bullet points above) is taken as a guide, the R3 is the clear winner of the match-up (25 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

R3 25:05 A7S

How about other alternatives? Do the specifications of the Canon R3 and the Sony A7S place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the R3 or the A7S. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

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 R35/5o4.5/5..5/54.5/5 Sep 2021 5,999 amazon.com
2.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 2,499ebay.com
3.
 
Canon R6 Mark II5/5+ +4.5/591/1004.5/55/5 Nov 2022 2,499 amazon.com
4.
 
Canon 1D X Mark III..+ +5/5..4.5/54/5 Jan 2020 6,499 amazon.com
5.
 
Canon R54.5/5+4/591/1004.5/54.5/5 Jul 2020 3,899 amazon.com
6.
 
Canon R65/5+ +4/590/1004.5/55/5 Jul 2020 2,499 amazon.com
7.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 5,999ebay.com
8.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 3,499ebay.com
9.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 3,499ebay.com
10.
 
Leica SL2-S4/5..4/5..4.5/54.5/5 Dec 2020 4,895 amazon.com
11.
 
Nikon Df4/5....81/1004/54/5 Nov 2013 2,749ebay.com
12.
 
Sony ZV-E1..+4/5....4.5/5 Mar 2023 2,199 amazon.com
13.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
14.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699ebay.com
15.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
16.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 1,999ebay.com
17.
 
Sony A900..+ +..+ +4.5/55/5 Sep 2008 2,999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. 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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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 use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon R3 vs Sony A7S

    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 R3 Sony A7S
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Canon RF mount lenses Sony E mount lenses
    Launch Date September 2021 April 2014
    Launch Price USD 5,999 USD 2,499
    Sensor Specs Canon R3 Sony A7S
    Sensor Technology Stacked BSI-CMOS CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 36.0 x 24.0 mm 35.8 x 23.9 mm
    Sensor Area 864 mm2 855.62 mm2
    Sensor Diagonal 43.3 mm 43 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 24 Megapixels 12 Megapixels
    Image Resolution 6000 x 4000 pixels 4240 x 2832 pixels
    Pixel Pitch 6.00 μm 8.45 μm
    Pixel Density 2.78 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 6K/60p Video 1080/60p Video
    ISO Setting 100 - 51,200 ISO 100 - 102,400 ISO
    ISO Boost 50 - 204,800 ISO 50 - 409,600 ISO
    Image Processor DIGIC X BIONZ X
    DXO Sensor Quality (score) 96 87
    DXO Color Depth (bits) 25 23.9
    DXO Dynamic Range (EV) 14.7 13.2
    DXO Low Light (ISO) 4086 3702
    Screen Specs Canon R3 Sony A7S
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.71x
    Viewfinder Resolution 5760k dots 2400k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 4150k dots 921k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon R3 Sony A7S
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 12 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterup to 1/64000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CFexB or SDXC cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support UHS-II UHS-I
    Connectivity Specs Canon R3 Sony A7S
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.2 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket 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 no Bluetooth
    Body Specs Canon R3 Sony A7S
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Canon LP-E19 Sony NP-FW50
    Battery Life (CIPA)760 shots per charge380 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 150 x 143 x 87 mm
    (5.9 x 5.6 x 3.4 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 1015 g (35.8 oz) 489 g (17.2 oz)
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