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Sony RX100 III versus Canon G1 X Mark III

The Sony Cyber-shot DSC-RX100 III and the Canon PowerShot G1 X Mark III are two digital cameras that were revealed to the public, respectively, in May 2014 and October 2017. Both the RX100 III and the G1X Mark III are fixed lens compact cameras that are based on an one-inch (RX100 III) and an APS-C (G1X Mark III) sensor. The Sony has a resolution of 20 megapixel, whereas the Canon provides 24 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Sony RX100 III vs Canon G1 X Mark III

An illustration of the physical size and weight of the Sony RX100 III and the Canon G1 X Mark III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the RX100 III – represents the basis for the calculations across all the size and weight measures).

Compare Sony RX100 III vs Canon G1 X Mark III
Compare RX100 III versus G1X Mark III top
Compare RX100 III and G1X Mark III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G1 X Mark III is considerably larger (52 percent) than the Sony RX100 III. Moreover, the G1X Mark III is substantially heavier (38 percent) than the RX100 III. It is noteworthy in this context that the G1X Mark III is splash and dust-proof, while the RX100 III does not feature any corresponding weather-sealing.

Concerning battery life, the RX100 III gets 320 shots out of its NP-BX1 battery, while the G1X Mark III can take 200 images on a single charge of its NB-13L power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

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
Sony RX100 III» 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i Sony RX100 III
Canon G1 X Mark III« 4.5 in 3.1 in 2.0 in 14.1 oz 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i Canon 80D
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i Canon G5 X
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i Canon G7 X
Fujifilm X100F« » 5.0 in 3.0 in 2.0 in 16.5 oz 390 n Jan 2017 1,299 i i Fujifilm X100F
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Ricoh GR II« » 4.6 in 2.5 in 1.4 in 8.9 oz 320 n Jun 2015 699- i Ricoh GR II
Ricoh GR« » 4.6 in 2.4 in 1.4 in 8.6 oz 290 n Apr 2013 799- i Ricoh GR
Sony A6300« » 4.7 in 2.6 in 1.9 in 14.3 oz 400 Y Feb 2016 999- i Sony A6300
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399 i i Sony A6500
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i Sony RX100 V
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i Sony RX100 IV
Sony A5100« » 4.3 in 2.5 in 1.4 in 10.0 oz 400 n Aug 2014 549 i i Sony A5100
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i Sony RX100 II
Sony RX100« » 4.0 in 2.3 in 1.4 in 8.5 oz 330 n Jun 2012 649- i Sony RX100

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 RX100 III was launched at a markedly lower price (by 38 percent) than the G1X Mark 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: Sony RX100 III vs Canon G1 X Mark III

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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony RX100 III features an one-inch sensor and the Canon G1 X Mark III an APS-C sensor. The sensor area in the G1X Mark III is 186 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony RX100 III and Canon G1 X Mark III sensor measures

With 24MP, the G1X Mark III offers a higher resolution than the RX100 III (20MP), but the G1X Mark III nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 2.41μm for the RX100 III) due to its larger sensor. Moreover, the G1X Mark III is a much more recent model (by 3 years and 5 months) than the RX100 III, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

RX100 III versus G1X Mark 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Sony RX100 III» 1-inch 20.0 5472 36481080/60p22.412.349567Sony RX100 III
Canon G1 X Mark III« APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----Canon G5 X
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671Canon G7 X
Fujifilm X100F« » APS-C 24.0 6000 40001080/60p----Fujifilm X100F
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
Ricoh GR II« » APS-C 16.1 4928 32641080/30p23.613.7107880Ricoh GR II
Ricoh GR« » APS-C 16.1 4928 32641080/30p23.613.597278Ricoh GR
Sony A6300« » APS-C 24.0 6000 40004K/30p24.413.7143785Sony A6300
Sony A6500« » APS-C 24.0 6000 40004K/30p24.513.7140585Sony A6500
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670Sony RX100 V
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony A5100« » APS-C 24.0 6000 40001080/60p23.812.7134780Sony A5100
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367Sony RX100 II
Sony RX100« » 1-inch 20.0 5472 36481080/60p22.612.439066Sony RX100

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, and both provide the same movie specifications (1080/60p).

 

Feature comparison: Sony RX100 III vs Canon G1 X Mark III

Beyond 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 G1X Mark III offers a substantially higher resolution than the one in the RX100 III (2360k vs 1440k dots). The adjacent table lists some of the other core features of the Sony RX100 III and Canon G1 X Mark III along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Sony RX100 III»1440 n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 III
Canon G1 X Mark III«2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 80D
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y Canon G5 X
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y Canon G7 X
Fujifilm X100F« »2360 n 3.0 1040 fixed n 4000 8.0 Y n Fujifilm X100F
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
Ricoh GR II« »- n 3.0 1230 fixed n 4000 4.0 Y n Ricoh GR II
Ricoh GR« »- n 3.0 1230 fixed n 4000 4.0 Y n Ricoh GR
Sony A6300« »2300 n 3.0 922 tilting n 4000 11.0 Y n Sony A6300
Sony A6500« »2300 n 3.0 922 tilting Y 4000 11.0 Y Y Sony A6500
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III
Sony RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y Sony RX100 V
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony A5100« »- n 3.0 922 tilting Y 4000 6.0 Y n Sony A5100
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 II
Sony RX100« »- n 3.0 1229 fixed n 2000 10.0 Y Y Sony RX100

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G1X Mark III has a touchscreen, while the RX100 III has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Both the RX100 III and the G1X Mark III have zoom lenses build in. The RX100 III has a 24-70mm f/1.8-2.8 optic and the G1X Mark III offers a 24-72mm f/2.8-5.6 (focal lengths in full frame equivalent terms). Hence, the Sony and Canon provide the same view at the wide-angle end, but the Canon has more tele-photo reach at the long end. The RX100 III offers the faster maximum aperture.

The RX100 III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the G1X Mark III uses SDXC cards.

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
Sony RX100 III»-stereomono--micro2.0YY-Sony RX100 III
Canon G1 X Mark III«Ystereomono--micro2.0YYYCanon G1 X Mark III
Canon 80D« »YstereomonoYYmini2.0YY-Canon 80D
Canon G5 X« »YstereomonoYYmini2.0YY-Canon G5 X
Canon G7 X« »-stereomono--micro2.0YY-Canon G7 X
Fujifilm X100F« »YstereomonoY-micro2.0Y--Fujifilm X100F
Panasonic FZ1000« »YstereomonoY-micro2.0YY-Panasonic FZ1000
Ricoh GR II« »Ystereomono--micro2.0YY-Ricoh GR II
Ricoh GR« »Ymonomono--micro2.0---Ricoh GR
Sony A6300« »YstereomonoY-micro2.0YY-Sony A6300
Sony A6500« »YstereomonoY-micro2.0YY-Sony A6500
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
Sony RX100 V« »-stereomono--micro2.0YY-Sony RX100 V
Sony RX100 IV« »-stereomono--micro2.0YY-Sony RX100 IV
Sony A5100« »-stereomono--micro2.0YY-Sony A5100
Sony RX100 II« »Ystereomono--micro2.0YY-Sony RX100 II
Sony RX100« »-stereomono--micro2.0---Sony RX100

The G1X Mark III is a current model that online retailers, such as amazon, will have in stock. In contrast, the RX100 III has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 III was succeeded by the Sony RX100 IV.

Review summary: Sony RX100 III vs Canon G1 X Mark III

So how do things add up? Is there a clear favorite between the Sony RX100 III and the Canon G1 X Mark III? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Sony Cyber-shot DSC-RX100 III:

  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
  • Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.8).
  • More compact: Is smaller (102x58mm vs 115x78mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 109g or 27 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (320 versus 200) on a single battery charge.
  • More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in May 2014).

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Advantages of the Canon PowerShot G1 X Mark III:

  • More detail: Has more megapixels (24 vs 20MP), which boosts linear resolution by 10%.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1440k dots).
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 3 years and 5 months of technical progress since the RX100 III launch.

If the number of relative strengths (bullet points above) is taken as a guide, the G1X Mark III emerges as the winner of the match-up (10 : 7 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.

RX100 III 07:10 G1X Mark III

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the RX100 III or the G1X Mark III. 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. This is why hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony RX100 III»HiRec82/1004.5/54.5/55/5 May 2014 799- i Sony RX100 III
Canon G1 X Mark III«Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i Canon 80D
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i Canon G5 X
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i Canon G7 X
Fujifilm X100F« »Rec83/1004.5/5-4.5/5 Jan 2017 1,299 i i Fujifilm X100F
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
Ricoh GR II« »--4.5/54.5/54.5/5 Jun 2015 699- i Ricoh GR II
Ricoh GR« »-79/1004.5/54.5/54.5/5 Apr 2013 799- i Ricoh GR
Sony A6300« »Rec85/1005/55/55/5 Feb 2016 999- i Sony A6300
Sony A6500« »HiRec85/1004.5/55/54.5/5 Oct 2016 1,399 i i Sony A6500
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i Sony RX100 V
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony A5100« »Rec-4.5/54.5/55/5 Aug 2014 549 i i Sony A5100
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i Sony RX100 II
Sony RX100« »HiRec78/1004/55/55/5 Jun 2012 649- i Sony RX100

The review scores listed above should be treated 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you do not see the camera that you are looking for, please send me an email, and I will try to add information on that model to the database.

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