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Canon G1 X Mark III vs Sony A7R III

The Canon PowerShot G1 X Mark III and the Sony Alpha A7R III are two enthusiast cameras that were revealed to the public in October 2017. The G1X Mark III is a fixed lens compact, while the A7R III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (G1X Mark III) 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 G1 X Mark III   Sony A7R III
Canon G1 X Mark III Sony A7R III
Fixed lens compact camera Mirrorless system camera
24-72mm f/2.8-5.6 Sony E mount lenses
24 MP, APS-C Sensor 42.2 MP, Full Frame Sensor
1080/60p Video 4K/30p Video
ISO 100-25600 ISO 100-32000 (50-102400)
Electronic viewfinder (2360k dots) Electronic viewfinder (3686k dots)
3.0" LCD, 1040k dots 3.0" LCD, 1440k dots
Swivel touchscreen Tilting touchscreen
9 shutter flaps per second 10 shutter flaps per second
Lens-based stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
200 shots per battery charge650 shots per battery charge
115 x 78 x 51 mm, 399 g 127 x 96 x 74 mm, 650 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X Mark III 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.

Body comparison: Canon G1 X Mark III vs Sony A7R III

The side-by-side display below illustrates the physical size and weight of the Canon G1 X Mark III and the Sony A7R III. 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 measures are rounded to the nearest millimeter.

Size Canon G1 X Mark III vs Sony A7R III
Compare G1X Mark III versus A7R III top
Comparison G1X Mark III 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 larger (36 percent) than the Canon G1 X Mark III. 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 and possibly misleading, as the G1X Mark III has a lens built in, whereas the A7R III is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the A7R III and their specifications in the Sony FE Lens Catalog.

Concerning battery life, the G1X Mark III gets 200 shots out of its NB-13L battery, while the A7R III can take 650 images on a single charge of its 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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon G1 X Mark III» 115 mm 78 mm 51 mm 399 g 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
 
Sony A7R III« 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199 i i Sony A7R III
 
Canon 2000D« » 129 mm 101 mm 78 mm 475 g 500 n Feb 2018 449 i i Canon 2000D
 
Canon M50« » 116 mm 88 mm 59 mm 390 g 235 n Feb 2018 779 i i Canon M50
 
Canon 6D Mark II« » 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 i i Canon 6D Mark II
 
Canon 200D« » 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549- i Canon 200D
 
Canon G9 X Mark II« » 98 mm 58 mm 31 mm 206 g 235 n Jan 2017 529 i i Canon G9 X Mark II
 
Canon 80D« » 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199 i i Canon 80D
 
Fujifilm X100F« » 127 mm 75 mm 52 mm 469 g 390 n Jan 2017 1,299 i i Fujifilm X100F
 
Nikon D7500« » 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 i i Nikon D7500
 
Panasonic FT7« » 117 mm 76 mm 37 mm 319 g 300 Y May 2018 449 i i Panasonic FT7
 
Sony A7 III« » 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A9« » 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499 i i Sony A9
 
Sony A99 II« » 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i i Sony A99 II
 
Sony RX10 III« » 133 mm 94 mm 127 mm 1051 g 420 Y Mar 2016 1,499 i i Sony RX10 III
 
Sony A7R II« » 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« » 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i i Sony A7S II
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The G1X Mark III was launched at a lower price than the A7R III, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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: Canon G1 X Mark III vs Sony A7R III

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon G1 X Mark III 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, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon G1 X Mark III and Sony A7R III sensor measures

With 42.2MP, the A7R III offers a higher resolution than the G1X Mark III (24MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.72μm for the G1X Mark III) due to its larger sensor. It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation. 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 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Canon G1 X Mark III are 30 x 20 inch or 76.2 x 50.8 cm for good quality, 24 x 16 inch or 61 x 40.6 cm for very good quality, and 20 x 13.3 inch or 50.8 x 33.9 cm for excellent quality prints.

Unlike the G1X Mark III, 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 PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. 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.

G1X Mark III versus A7R III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon G1 X Mark III» APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
 
Sony A7R III« Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Canon 2000D« » APS-C 24.0 6000 40001080/30p22.611.9100971Canon 2000D
 
Canon M50« » APS-C 24.0 6000 40004K/24p----Canon M50
 
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285Canon 6D Mark II
 
Canon 200D« » APS-C 24.0 6000 40001080/60p23.613.4104179Canon 200D
 
Canon G9 X Mark II« » 1-inch 20.0 5472 36481080/60p21.912.552265Canon G9 X Mark II
 
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
 
Fujifilm X100F« » APS-C 24.0 6000 40001080/60p----Fujifilm X100F
 
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386Nikon D7500
 
Panasonic FT7« » 1/2.3 20.2 5184 38884K/30p----Panasonic FT7
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
 
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
 
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
 
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7R III provides a better video resolution than the G1X Mark III. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/60p.

 

Feature comparison: Canon G1 X Mark III vs Sony A7R III

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7R III offers a substantially higher resolution than the one in the G1X Mark III (3686k vs 2360k dots). The adjacent table lists some of the other core features of the Canon G1 X Mark III and Sony A7R III along with similar information for a selection of comparators.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon G1 X Mark III»2360 n 3.0 1040 swivel Y 1/2000s 9.0 Y Y Canon G1 X Mark III
 
Sony A7R III«3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
Canon 2000D« »optical n 3.0 920 fixed n 1/4000s 3.0 Y n Canon 2000D
 
Canon M50« »2360 n 3.0 1040 swivel Y 1/4000s 10.0 Y n Canon M50
 
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 1/4000s 6.5 n n Canon 6D Mark II
 
Canon 200D« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon 200D
 
Canon G9 X Mark II« »- n 3.0 1040 fixed Y 1/2000s 8.2 Y Y Canon G9 X Mark II
 
Canon 80D« »optical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n Canon 80D
 
Fujifilm X100F« »2360 n 3.0 1040 fixed n 1/4000s 8.0 Y n Fujifilm X100F
 
Nikon D7500« »optical Y 3.2 922 tilting Y 1/8000s 8.0 Y n Nikon D7500
 
Panasonic FT7« »1170 n 3.0 1040 fixed n 1/1300s 10.0 Y Y Panasonic FT7
 
Sony A7 III« »2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y Sony A7 III
 
Sony A9« »3686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y Sony A9
 
Sony A99 II« »2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y Sony A99 II
 
Sony RX10 III« »2359 Y 3.0 1229 tilting n 1/2000s 14.0 Y Y Sony RX10 III
 
Sony A7R II« »2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7R II
 
Sony A7S II« »2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7S II

One difference between the cameras concerns the presence of an on-board flash. The G1X Mark III has one, while the A7R III does not. While the built-in flash of the G1X Mark III is not very powerful, it can at times be useful as a fill-in light.

The G1X Mark III 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 G1 X Mark III 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 G1X Mark III 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 G1X Mark III only has one slot. The A7R III supports UHS-II cards (on its first slot), while the G1X Mark III can use UHS-I cards.

 

Connectivity comparison: Canon G1 X Mark III vs Sony A7R III

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 PowerShot G1 X Mark III and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon G1 X Mark III»Ystereomono--micro2.0YYYCanon G1 X Mark III
 
Sony A7R III«YstereomonoYYmicro3.1YYYSony A7R III
 
Canon 2000D« »Ymonomono--mini2.0YY-Canon 2000D
 
Canon M50« »YstereomonoY-micro2.0YYYCanon M50
 
Canon 6D Mark II« »YstereomonoY-mini2.0YYYCanon 6D Mark II
 
Canon 200D« »YstereomonoY-mini2.0YYYCanon 200D
 
Canon G9 X Mark II« »-stereomono--micro2.0YYYCanon G9 X Mark II
 
Canon 80D« »YstereomonoYYmini2.0YY-Canon 80D
 
Fujifilm X100F« »YstereomonoY-micro2.0Y--Fujifilm X100F
 
Nikon D7500« »YstereomonoYYmini2.0Y-YNikon D7500
 
Panasonic FT7« »-stereomono--micro2.0Y--Panasonic FT7
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
 
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
 
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
 
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
 
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II

It is notable that the A7R III has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The G1X Mark III does not feature such a mic input.

Studio photographers will appreciate that the Sony A7R III (unlike the G1X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the G1X Mark III and the A7R III are recent models that are part of the current product line-up. The G1X Mark III replaced the earlier Canon G1 X Mark II, while the A7R III followed on from the Sony A7R II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.


Review summary: Canon G1 X Mark III vs Sony A7R III

So what conclusions can be drawn? Is the Canon G1 X Mark III better than the Sony A7R III or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Canon PowerShot G1 X Mark III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More flexible LCD: Has 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.
  • Ready to shoot: Has a lens built-in, whereas the A7R III requires a separate lens.
  • More compact: Is smaller (115x78mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the A7R III).
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.

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Advantages 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 definition movie capture (4K/30p vs 1080/60p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (3686k vs 2360k dots).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1040k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • Longer lasting: Gets more shots (650 versus 200) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • 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).

If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (20 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

G1X Mark III 08:20 A7R III

How about other alternatives? Do the specifications of the Canon G1 X Mark III and the Sony A7R III place the cameras among the top in their class? Find out in the latest Best Travel-Zoom 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G1X Mark III or the A7R III. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews: Canon G1 X Mark III vs Sony A7R III

This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon G1 X Mark III»+79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
 
Sony A7R III«+ +90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
 
Canon 2000D« »o-3.5/5-3.5/5 Feb 2018 449 i i Canon 2000D
 
Canon M50« »+79/100-4/53.5/5 Feb 2018 779 i i Canon M50
 
Canon 6D Mark II« »+80/1004.5/54/54/5 Jun 2017 1,999 i i Canon 6D Mark II
 
Canon 200D« »+ +78/1004.5/54.5/54.5/5 Jun 2017 549- i Canon 200D
 
Canon G9 X Mark II« »-75/1004.5/54.5/54.5/5 Jan 2017 529 i i Canon G9 X Mark II
 
Canon 80D« »+ +84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i Canon 80D
 
Fujifilm X100F« »+83/1004.5/5-4.5/5 Jan 2017 1,299 i i Fujifilm X100F
 
Nikon D7500« »+ +86/1005/54.5/54.5/5 Apr 2017 1,299 i i Nikon D7500
 
Panasonic FT7« »+-3.5/5-3.5/5 May 2018 449 i i Panasonic FT7
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A9« »+ +89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
 
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 II
 
Sony RX10 III« »+84/1004.5/54.5/54.5/5 Mar 2016 1,499 i i Sony RX10 III
 
Sony A7R II« »+ +90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« »+-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The above review scores should be interpreted with care, 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 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.

Canon G1 X Mark III:
Check Amazon price
Sony A7R III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 G1 X Mark III 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 G1 X Mark III Sony A7R III
    Camera Type Fixed lens compact camera Mirrorless system camera
    Camera Lens 24-72mm f/2.8-5.6 Sony E mount lenses
    Launch Date October 2017 October 2017
    Launch Price USD 1299 USD 3199
    Sensor Specs Canon G1 X Mark III 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 1.5x 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 1080/60p Video 4K/30p Video
    ISO Setting 100-25600 ISO 100-32000 ISO
    ISO Boost no Enhancement 50-102400 ISO
    Image Processor DIGIC 7 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 G1 X Mark III Sony A7R III
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification ..x 0.78x
    Viewfinder Resolution 2360k dots 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1040k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon G1 X Mark III Sony A7R III
    Autofocus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000/s 1/8000/s
    Continuous Shooting 9 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens-based stabilizationIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Canon G1 X Mark III 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 micro HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in NFC built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Canon G1 X Mark III Sony A7R III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NB-13L power pack NP-FZ100 power pack
    Battery Life (CIPA)200 shots per charge650 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 115 x 78 x 51 mm
    (4.5 x 3.1 x 2.0 in)
    127 x 96 x 74 mm
    (5.0 x 3.8 x 2.9 in)
    Camera Weight 399 g (14.1 oz) 650 g (22.9 oz)

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