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Canon G1 X Mark III versus Panasonic GX800

The Canon PowerShot G1 X Mark III and the Panasonic Lumix DMC-GX800 (labelled Panasonic GX850 in some countries) are two digital cameras that were announced, respectively, in October 2017 and January 2017. The G1X Mark III is a fixed lens compact, while the GX800 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (G1X Mark III) and a Four Thirds (GX800) sensor. The Canon has a resolution of 24 megapixel, whereas the Panasonic provides 15.8 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: Canon G1 X Mark III vs Panasonic GX800

An illustration of the physical size and weight of the Canon G1 X Mark III and the Panasonic GX800 is provided in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All size 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 – the G1X Mark III – represents the basis or 100 percent across all the size and weight measures).

Snapsort Canon G1 X Mark III vs Panasonic GX800
Compare G1X Mark III versus GX800 top
Compare G1X Mark III and GX800 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX800 is notably smaller (22 percent) than the Canon G1 X Mark III. It is worth mentioning in this context that the G1X Mark III is splash and dust resistant, while the GX800 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X Mark III has a lens build in, whereas the GX800 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the GX800 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the G1X Mark III gets 200 shots out of its NB-13L battery, while the GX800 can take 210 images on a single charge of its DMW-BLH7 power pack.

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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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)
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
Panasonic GX800« 4.2 in 2.6 in 1.3 in 9.5 oz 210 n Jan 2017 549 i i
Canon G9 X Mark II« » 3.9 in 2.3 in 1.2 in 7.3 oz 235 n Jan 2017 529 i i
Canon 6D Mark II« » 5.7 in 4.4 in 3.0 in 27.0 oz 1200 Y Jun 2017 1,999 i i
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i
Canon 1D X Mark II« » 6.2 in 6.6 in 3.3 in 54.0 oz 1210 Y Feb 2016 5,999 i i
Canon G7 X Mark II« » 4.2 in 2.4 in 1.7 in 11.3 oz 265 n Feb 2016 699 i i
Fujifilm X100F« » 5.0 in 3.0 in 2.0 in 16.5 oz 390 n Jan 2017 1,299 i i
Nikon D7500« » 5.4 in 4.1 in 2.9 in 25.4 oz 950 Y Apr 2017 1,299 i i
Panasonic FZ2500« » 5.4 in 4.0 in 5.3 in 32.3 oz 350 n Sep 2016 1,199 i i
Panasonic G7« » 4.9 in 3.4 in 3.0 in 14.5 oz 350 n May 2015 649- i
Panasonic GF7« » 4.2 in 2.6 in 1.3 in 9.4 oz 230 n Jan 2015 499- i
Panasonic GF6« » 4.4 in 2.6 in 1.5 in 11.4 oz 340 n Apr 2013 499- i
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 949- i
Sony RX10 IV« » 5.2 in 3.7 in 5.7 in 38.6 oz 400 Y Sep 2017 1,699 i i
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i

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. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Canon G1 X Mark III vs Panasonic GX800

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. 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 are more costly to manufacture and tend to 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 Panasonic GX800 a Four Thirds sensor. The sensor area in the GX800 is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the G1X Mark III has a native 3:2 aspect ratio, while the one in the GX800 offers a 4:3 aspect.

Canon G1 X Mark III and Panasonic GX800 sensor measures

With 24MP, the G1X Mark III offers a higher resolution than the GX800 (15.8MP), but the G1X Mark III has marginally smaller individual pixels (pixel pitch of 3.72μm versus 3.77μm for the GX800). However, the G1X Mark III is a somewhat more recent model (by 9 months) than the GX800, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the GX800 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

G1X Mark III versus GX800 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon G1 X Mark III» APS-C 24.0 6000 40001080/60p----
Panasonic GX800« Four Thirds 15.8 4592 34484K/30p23.213.358673
Canon G9 X Mark II« » 1-inch 20.0 5472 36481080/60p21.912.552265
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788
Canon G7 X Mark II« » 1-inch 20.0 5472 36481080/60p----
Fujifilm X100F« » APS-C 24.0 6000 40001080/60p----
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386
Panasonic FZ2500« » 1-inch 20.0 5472 36484K/30p----
Panasonic G7« » Four Thirds 15.8 4592 34484K/30p----
Panasonic GF7« » Four Thirds 15.8 4592 34481080/60p----
Panasonic GF6« » Four Thirds 15.8 4592 34481080/60i20.710.662254
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355
Sony RX10 IV« » 1-inch 20.0 5472 36484K/30p----
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the GX800 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 Panasonic GX800

Apart from body and sensor, cameras can and do differ across a range of features. For example, the G1X Mark III has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GX800 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon G1 X Mark III and Panasonic GX800 in connection with corresponding information for a sample of similar cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera 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
Canon G1 X Mark III»2360 n 3.0 1040 swivel Y 2000 9.0 Y Y
Panasonic GX800«- n 3.0 1040 tilting Y 500 10.0 Y n
Canon G9 X Mark II« »- n 3.0 1040 fixed Y 2000 8.2 Y Y
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 4000 6.5 n n
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n
Canon G7 X Mark II« »- n 3.0 1040 tilting Y 2000 8.0 Y Y
Fujifilm X100F« »2360 n 3.0 1040 fixed n 4000 8.0 Y n
Nikon D7500« »optical Y 3.2 922 tilting Y 8000 8.0 Y n
Panasonic FZ2500« »2360 n 3.0 1040 swivel Y 4000 12.0 Y Y
Panasonic G7« »2360 n 3.0 1040 swivel Y 4000 7.0 Y n
Panasonic GF7« »- n 3.0 1040 tilting Y 500 5.8 Y n
Panasonic GF6« »- n 3.0 1040 tilting Y 4000 4.2 Y n
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n
Panasonic GX1« »- n 3.0 460 fixed Y 4000 4.2 Y n
Sony RX10 IV« »2359 Y 3.0 1440 tilting Y 2000 24.0 Y Y
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y

Both the G1X Mark III and the GX800 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The GX800 replaced the earlier Panasonic GF7, while the G1X Mark III followed on from the Canon G1 X Mark II.

Review summary: Canon G1 X Mark III vs Panasonic GX800

So how do things add up? Is the Canon G1 X Mark III better than the Panasonic GX800 or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Canon PowerShot G1 X Mark III:

  • More detail: Offers more megapixels (24 vs 15.8MP) with a 26% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Features a larger and more technologically advanced imaging sensor.
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (2000/sec vs 500/sec) to freeze action.
  • Ready to shoot: Has a lens build-in, whereas the GX800 requires a separate lens.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • More modern: Is somewhat more recent (announced 9 months after the GX800).

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Reasons to prefer the Panasonic Lumix DMC-GX800:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • More compact: Is smaller (107x65mm vs 115x78mm) and will fit more readily into a bag.
  • More heavily discounted: Has been on the market for longer (launched in January 2017).

If the count of individual advantages (bullet points above) is taken as a guide, the G1X Mark III is the clear winner of the match-up (10 : 5 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.

G1X Mark III 10:05 GX800

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the G1X Mark III and the GX800 in practical situations. 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. This is why expert reviews are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon G1 X Mark III»Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i
Panasonic GX800«Rec76/1004.5/54/54.5/5 Jan 2017 549 i i
Canon G9 X Mark II« »-75/1004.5/54.5/54.5/5 Jan 2017 529 i i
Canon 6D Mark II« »Rec80/1004.5/54/54/5 Jun 2017 1,999 i i
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i
Canon G7 X Mark II« »HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i
Fujifilm X100F« »Rec83/1004.5/5-4.5/5 Jan 2017 1,299 i i
Nikon D7500« »HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i
Panasonic FZ2500« »Rec82/1004.5/54.5/55/5 Sep 2016 1,199 i i
Panasonic G7« »HiRec80/1005/54.5/54.5/5 May 2015 649- i
Panasonic GF7« »Rec-4.5/54.5/54.5/5 Jan 2015 499- i
Panasonic GF6« »HiRec-4.5/5-4.5/5 Apr 2013 499- i
Panasonic G6« »HiRec-5/5-4.5/5 Apr 2013 599- i
Panasonic GX1« »Rec77/1004.5/54.5/54.5/5 Nov 2011 949- i
Sony RX10 IV« »Rec84/1004.5/5-5/5 Sep 2017 1,699 i i
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, please send me an email, and I will try to update the database with the necessary infos.

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