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Panasonic GX85 versus Canon G1 X Mark III

The Panasonic Lumix DMC-GX85 (called Panasonic GX80 in some regions) and the Canon PowerShot G1 X Mark III are two digital cameras that were officially introduced, respectively, in April 2016 and October 2017. The GX85 is a mirrorless interchangeable lens camera, while the G1X Mark III is a fixed lens compact. The cameras are based on a Four Thirds (GX85) and an APS-C (G1X Mark III) sensor. The Panasonic has a resolution of 15.8 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: Panasonic GX85 vs Canon G1 X Mark III

The physical size and weight of the Panasonic GX85 and the Canon G1 X Mark 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 size dimensions are rounded to the nearest millimeter. You can also use the toggle button 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 GX85 – represents the basis for the calculations across all the size and weight measures).

Compare Panasonic GX85 vs Canon G1 X Mark III
Compare GX85 versus G1X Mark III top
Compare GX85 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 somewhat larger (4 percent) than the Panasonic GX85. It is noteworthy in this context that the G1X Mark III is splash and dust-proof, while the GX85 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 GX85 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 GX85 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the GX85 gets 290 shots out of its DMW-BLG10 battery, while the G1X Mark III can take 200 images on a single charge of its NB-13L power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
Panasonic GX85» 122 mm 71 mm 44 mm 426 g 290 n Apr 2016 799 i i Panasonic GX85
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
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 80D« » 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199 i i Canon 80D
Canon 1D X Mark II« » 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999 i i Canon 1D X Mark II
Nikon D7500« » 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 i i Nikon D7500
Olympus E-M10 II« » 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 799- i Olympus E-M10 II
Olympus E-M5 II« » 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099 i i Olympus E-M5 II
Olympus E-M10« » 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699- i Olympus E-M10
Panasonic GX9« » 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849 i i Panasonic GX9
Panasonic G85« » 128 mm 89 mm 74 mm 505 g 330 Y Sep 2016 899 i i Panasonic G85
Panasonic ZS100« » 111 mm 65 mm 44 mm 312 g 300 n Jan 2016 699- i Panasonic ZS100
Panasonic G7« » 125 mm 86 mm 77 mm 410 g 350 n May 2015 649- i Panasonic G7
Panasonic GM5« » 99 mm 60 mm 36 mm 211 g 220 n Sep 2014 749- i Panasonic GM5
Panasonic GM1« » 99 mm 55 mm 30 mm 204 g 230 n Oct 2013 749- i Panasonic GM1
Panasonic GX7« » 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999- i Panasonic GX7
Sony RX10 III« » 133 mm 94 mm 127 mm 1051 g 420 Y Mar 2016 1,499- i Sony RX10 III

Any camera purchase will naturally be influenced heavily by the price. 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. 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: Panasonic GX85 vs Canon G1 X Mark III

The size of the sensor inside a digital camera is one of the key determinants 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 Panasonic GX85 features a Four Thirds sensor and the Canon G1 X Mark III an APS-C sensor. The sensor area in the G1X Mark III is 48 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the GX85 has a native 4:3 aspect ratio, while the one in the G1X Mark III offers a 3:2 aspect.

Panasonic GX85 and Canon G1 X Mark III sensor measures

With 24MP, the G1X Mark III offers a higher resolution than the GX85 (15.8MP), but the G1X Mark III has marginally smaller individual pixels (pixel pitch of 3.72μm versus 3.77μm for the GX85). Yet, the G1X Mark III is a somewhat more recent model (by 1 year and 6 months) than the GX85, and its sensor might 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 GX85 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

GX85 versus G1X Mark III 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"). 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
Panasonic GX85» Four Thirds 15.8 4592 34484K/30p22.912.666271Panasonic GX85
Canon G1 X Mark III« APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285Canon 6D Mark II
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788Canon 1D X Mark II
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386Nikon D7500
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273Olympus E-M10 II
Olympus E-M5 II« » Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
Olympus E-M10« » Four Thirds 15.9 4608 34561080/30p22.812.388472Olympus E-M10
Panasonic GX9« » Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
Panasonic G85« » Four Thirds 15.8 4592 34484K/30p22.812.565671Panasonic G85
Panasonic ZS100« » 1-inch 20.0 5472 36484K/30p22.812.555970Panasonic ZS100
Panasonic G7« » Four Thirds 15.8 4592 34484K/30p----Panasonic G7
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
Panasonic GM1« » Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the GX85 provides a higher video resolution than the G1X Mark III. It can shoot video footage at 4K/30p, while the Canon is limited to 1080/60p.

 

Feature comparison: Panasonic GX85 vs Canon G1 X Mark III

Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the GX85 offers a higher resolution than the one in the G1X Mark III (2765k vs 2360k dots). The adjacent table lists some of the other core features of the Panasonic GX85 and Canon G1 X Mark III along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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
Panasonic GX85»2765 n 3.0 1040 tilting Y 4000 8.0 Y Y Panasonic GX85
Canon G1 X Mark III«2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 4000 6.5 n n Canon 6D Mark II
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 80D
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n Canon 1D X Mark II
Nikon D7500« »optical Y 3.2 922 tilting Y 8000 8.0 Y n Nikon D7500
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y Olympus E-M10 II
Olympus E-M5 II« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus E-M5 II
Olympus E-M10« »1440 n 3.0 1037 tilting Y 4000 8.0 Y Y Olympus E-M10
Panasonic GX9« »2760 n 3.0 1240 tilting Y 4000 9.0 Y Y Panasonic GX9
Panasonic G85« »2360 n 3.0 1040 swivel Y 4000 9.0 Y Y Panasonic G85
Panasonic ZS100« »1166 n 3.0 1040 fixed Y 2000 10.0 Y Y Panasonic ZS100
Panasonic G7« »2360 n 3.0 1040 swivel Y 4000 7.0 Y n Panasonic G7
Panasonic GM5« »1166 n 3.0 921 fixed Y 500 5.8 n n Panasonic GM5
Panasonic GM1« »- n 3.0 1036 fixed Y 500 5.0 Y n Panasonic GM1
Panasonic GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the GX85 features an electronic shutter, which makes silent shooting and higher burst speeds possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

Both the GX85 and the G1X Mark III are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The GX85 replaced the earlier Panasonic GX7, while the G1X Mark III followed on from the Canon G1 X Mark II.

Review summary: Panasonic GX85 vs Canon G1 X Mark III

So how do things add up? Which of the two cameras – the Panasonic GX85 or the Canon G1 X Mark III – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Panasonic Lumix DMC-GX85:

  • 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 detailed viewfinder: Has higher resolution electronic viewfinder (2765k vs 2360k dots).
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • Longer lasting: Can take more shots (290 versus 200) on a single battery charge.
  • More heavily discounted: Has been on the market for longer (launched in April 2016).

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

  • More detail: Has more megapixels (24 vs 15.8MP), which boosts linear resolution by 26%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster burst: Shoots at higher frequency (9 vs 8 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the GX85 necessitates an extra lens.
  • Less heavy: Has a lower weight even though it has a lens build in (unlike the GX85).
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • More modern: Was introduced somewhat (1 year and 6 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the G1X Mark III comes out slightly ahead of the GX85 (9 : 8 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.

GX85 08:09 G1X Mark III

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 GX85 or the G1X Mark III handle or 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. This is where reviews by experts come in. The table below summarizes the assessments of some of the best known 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
Panasonic GX85»HiRec82/1005/54.5/55/5 Apr 2016 799 i i Panasonic GX85
Canon G1 X Mark III«Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Canon 6D Mark II« »Rec80/1004.5/54/54/5 Jun 2017 1,999 i i Canon 6D Mark II
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i Canon 80D
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i Canon 1D X Mark II
Nikon D7500« »HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i Nikon D7500
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i Olympus E-M10 II
Olympus E-M5 II« »HiRec81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
Olympus E-M10« »-80/1005/54.5/55/5 Jan 2014 699- i Olympus E-M10
Panasonic GX9« »Rec-4.5/5-4.5/5 Feb 2018 849 i i Panasonic GX9
Panasonic G85« »HiRec84/1005/54.5/54.5/5 Sep 2016 899 i i Panasonic G85
Panasonic ZS100« »HiRec82/1004.5/54/54.5/5 Jan 2016 699- i Panasonic ZS100
Panasonic G7« »HiRec80/1005/54.5/54.5/5 May 2015 649- i Panasonic G7
Panasonic GM5« »Rec77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
Panasonic GM1« »Rec78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
Panasonic GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i Sony RX10 III

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. 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. Also, please note that some of the review sites have changed their methodology and reporting over time.

 

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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you cannot find the camera you are interested in, please send me an email, and I will try to add information on that model to the database.

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