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Canon G5 X versus Olympus E-M10 III

The Canon PowerShot G5 X and the Olympus OM-D E-M10 Mark III are two digital cameras that were officially introduced, respectively, in October 2015 and August 2017. The G5X is a fixed lens compact, while the E-M10 III is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (G5X) and a Four Thirds (E-M10 III) sensor. The Canon has a resolution of 20 megapixel, whereas the Olympus provides 15.9 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 G5 X vs Olympus E-M10 III

The physical size and weight of the Canon G5 X and the Olympus E-M10 III are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. 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 – the G5X – represents the basis or 100 percent across all the size and weight measures).

Snapsort Canon G5 X vs Olympus E-M10 III
Compare G5X versus E-M10 III top
Compare G5X and E-M10 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 III is notably larger (20 percent) than the Canon G5 X. In this context, it is worth noting that neither the G5X nor the E-M10 III are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G5X has a lens build in, whereas the E-M10 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 find an overview of optics for the E-M10 III and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the G5X gets 210 shots out of its NB-13L battery, while the E-M10 III can take 330 images on a single charge of its BLS-50 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 G5 X» 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i
Olympus E-M10 III« 4.8 in 3.3 in 2.0 in 14.5 oz 330 n Aug 2017 649 i i
Canon M6« » 4.4 in 2.7 in 1.8 in 13.8 oz 295 n Feb 2017 779 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
Canon G9 X« » 3.9 in 2.3 in 1.2 in 7.4 oz 220 n Oct 2015 529- i
Canon M3« » 4.4 in 2.7 in 1.7 in 12.9 oz 250 n Feb 2015 679- i
Canon T6i« » 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i
Canon T6s« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 849- i
Canon G1 X Mark II« » 4.6 in 2.9 in 2.6 in 19.5 oz 240 n Feb 2014 799 i i
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i
Olympus E-PL9« » 4.6 in 2.7 in 1.5 in 13.4 oz 350 n Feb 2018 549 i i
Olympus E-PL8« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Sep 2016 549- i
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i
Olympus E-PL7« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Aug 2014 599- i
Olympus E-M10« » 4.7 in 3.2 in 1.8 in 14.0 oz 320 n Jan 2014 699- i
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i
Sony RX100 III« » 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- 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 G5 X vs Olympus E-M10 III

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 G5 X features an one-inch sensor and the Olympus E-M10 III a Four Thirds sensor. The sensor area in the E-M10 III is 94 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 2.0. The sensor in the G5X has a native 3:2 aspect ratio, while the one in the E-M10 III offers a 4:3 aspect.

Canon G5 X and Olympus E-M10 III sensor measures

Despite having a smaller sensor, the Canon G5 X offers a higher resolution of 20 megapixel, compared with 15.9 MP of the Olympus E-M10 III. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 3.76μm for the E-M10 III). Moreover, it should be noted that the E-M10 III is a somewhat more recent model (by 1 year and 10 months) than the G5X, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

G5X versus E-M10 III MP

For most cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon G5 X» 1-inch 20.0 5472 36481080/60p----
Olympus E-M10 III« Four Thirds 15.9 4608 34564K/30p----
Canon M6« » APS-C 24.0 6000 40001080/60p----
Canon G7 X Mark II« » 1-inch 20.0 5472 36481080/60p----
Canon G9 X« » 1-inch 20.0 5472 36481080/60p21.512.349563
Canon M3« » APS-C 24.0 6000 40001080/30p22.811.8116972
Canon T6i« » APS-C 24.0 6000 40001080/60p22.712.091971
Canon T6s« » APS-C 24.0 6000 40001080/30p22.612.091570
Canon G1 X Mark II« » 1.5-inch 13.0 4160 31201080/30p21.510.858158
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671
Olympus E-PL9« » Four Thirds 15.9 4608 34564K/30p----
Olympus E-PL8« » Four Thirds 15.9 4608 34561080/30p----
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273
Olympus E-PL7« » Four Thirds 15.9 4608 34561080/30p22.712.487372
Olympus E-M10« » Four Thirds 15.9 4608 34561080/30p22.812.388472
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764
Sony RX100 III« » 1-inch 20.0 5472 36481080/60p22.412.349567

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 E-M10 III provides a better video resolution than the G5X. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/60p.

 

Feature comparison: Canon G5 X vs Olympus E-M10 III

Beyond body and sensor, cameras can and do differ across a range of features. The G5X and the E-M10 III are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2360k dots. The following table reports on some other key feature differences and similarities of the Canon G5 X, the Olympus E-M10 III, and comparable 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 G5 X»2360 n 3.0 1040 swivel Y 2000 5.9 Y Y
Olympus E-M10 III«2360 n 3.0 1040 tilting Y 4000 8.6 Y Y
Canon M6« »- n 3.0 1040 tilting Y 4000 9.0 Y n
Canon G7 X Mark II« »- n 3.0 1040 tilting Y 2000 8.0 Y Y
Canon G9 X« »- n 3.0 1040 fixed Y 2000 6.0 Y Y
Canon M3« »- n 3.0 1040 tilting Y 4000 4.2 Y n
Canon T6i« »optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon T6s« »optical Y 3.0 1040 swivel Y 4000 5.0 Y n
Canon G1 X Mark II« »- n 3.0 1040 tilting Y 4000 5.2 Y Y
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y
Olympus E-PL9« »- n 3.0 1040 tilting Y 4000 8.6 Y Y
Olympus E-PL8« »- n 3.0 1037 tilting Y 4000 8.0 n Y
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y
Olympus E-PL7« »- n 3.0 1037 tilting Y 4000 8.0 n Y
Olympus E-M10« »1440 n 3.0 1037 tilting Y 4000 8.0 Y Y
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y
Sony RX100 III« »1440 n 3.0 1229 tilting n 2000 10.0 Y Y

Both the G5X and the E-M10 III are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The E-M10 III replaced the earlier Olympus E-M10 II, while the G5X does not have a direct predecessor.

Review summary: Canon G5 X vs Olympus E-M10 III

So what is the bottom line? Is there a clear favorite between the Canon G5 X and the Olympus E-M10 III? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Canon PowerShot G5 X:

  • More detail: Offers more megapixels (20 vs 15.9MP) with a 14% higher linear resolution.
  • 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.
  • Ready to shoot: Has a lens build-in, whereas the E-M10 III requires a separate lens.
  • More compact: Is smaller (112x76mm vs 122x84mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a build-in lens (unlike the E-M10 III).
  • More heavily discounted: Has been on the market for longer (launched in October 2015).

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Arguments in favor of the Olympus OM-D E-M10 Mark III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (8.6 vs 5.9 flaps/sec) to capture the decisive moment.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • Longer lasting: Gets more shots (330 versus 210) out of a single battery charge.
  • More modern: Was introduced somewhat (1 year and 10 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the E-M10 III comes out slightly ahead of the G5X (8 : 7 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.

G5X 07:08 E-M10 III

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the G5X or the E-M10 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 where reviews by experts come in. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews 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 G5 X»HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i
Olympus E-M10 III«Rec80/1004.5/5-4.5/5 Aug 2017 649 i i
Canon M6« »-80/1004/54.5/54/5 Feb 2017 779 i i
Canon G7 X Mark II« »HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i
Canon G9 X« »HiRec-4.5/54/54.5/5 Oct 2015 529- i
Canon M3« »rev75/1004.5/54.5/54/5 Feb 2015 679- i
Canon T6i« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i
Canon T6s« »Rec77/1004.5/54.5/54.5/5 Feb 2015 849- i
Canon G1 X Mark II« »Rec77/1004/54/54.5/5 Feb 2014 799 i i
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i
Olympus E-PL9« »--4.5/5-4/5 Feb 2018 549 i i
Olympus E-PL8« »--4.5/5-4/5 Sep 2016 549- i
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i
Olympus E-PL7« »Rec-5/54.5/54/5 Aug 2014 599- i
Olympus E-M10« »-80/1005/54.5/55/5 Jan 2014 699- i
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i
Sony RX100 III« »HiRec82/1004.5/54.5/55/5 May 2014 799- 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you do not see the camera that you are looking for, kindly get in touch, and I will try to update the database with the necessary infos.

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