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Canon G7 X Mark III vs Olympus E-M1 III

The Canon PowerShot G7 X Mark III and the Olympus OM-D E-M1 Mark III are two digital cameras that were officially introduced, respectively, in July 2019 and February 2020. The G7X Mark III is a fixed lens compact, while the E-M1 III is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (G7X Mark III) and a Four Thirds (E-M1 III) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 20.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon G7 X Mark III versus Olympus E-M1 III
Canon G7 X Mark III Olympus E-M1 III
Fixed lens compact camera Mirrorless system camera
24-100mm f/1.8-2.8 Micro Four Thirds lenses
20 MP, 1" Sensor 20.2 MP, Four Thirds Sensor
4K/30p Video 4K/30p Video
ISO 125-12,800 (125 - 25,600) ISO 200-25,600
No viewfinder, LCD framing Electronic viewfinder (2360k dots)
3.0 LCD, 1040k dots 3.0 LCD, 1037k dots
Tilting touchscreen Swivel touchscreen
30 shutter flaps per second 18 shutter flaps per second
Lens-based stabilizationIn-body stabilization
not weather sealedWeathersealed body
235 shots per battery charge420 shots per battery charge
105 x 61 x 41 mm, 304 g 134 x 91 x 69 mm, 580 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 X Mark III and the Olympus OM-D E-M1 Mark 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

An illustration of the physical size and weight of the Canon G7 X Mark III and the Olympus E-M1 III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

The G7X Mark III can be obtained in two different colors (black, silver), while the E-M1 III is only available in black.

Size Canon G7 X Mark III vs Olympus E-M1 III
Compare G7X Mark III versus E-M1 III top
Comparison G7X Mark III or E-M1 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-M1 III is considerably larger (90 percent) than the Canon G7 X Mark III. It is noteworthy in this context that the E-M1 III is splash and dust-proof, while the G7X Mark III does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X Mark III has a lens built in, whereas the E-M1 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 E-M1 III and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the G7X Mark III gets 235 shots out of its NB-13L battery, while the E-M1 III can take 420 images on a single charge of its BLH-1 power pack. The battery packs of both cameras can be charged via USB, 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, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X Mark III 105 mm 61 mm 41 mm 304 g 235 n Jul 2019 749 i
2.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
3.
 
Canon G5 X Mark II 111 mm 61 mm 46 mm 340 g 230 n Jul 2019 899 i
4.
 
Canon SX740 110 mm 64 mm 40 mm 299 g 265 n Jul 2018 399 i
5.
 
Canon G7 X Mark II 106 mm 61 mm 42 mm 319 g 265 n Feb 2016 699i
6.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 799i
7.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 699i
8.
 
Leica C-LUX 113 mm 67 mm 46 mm 340 g 370 n Jun 2018 1,049 i
9.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
10.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
11.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
12.
 
Panasonic FZ1000 II 136 mm 97 mm 131 mm 810 g 350 n Feb 2019 899 i
13.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
14.
 
Panasonic ZS200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 799 i
15.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
16.
 
Sony ZV-1 105 mm 60 mm 44 mm 294 g 260 n May 2020 799 i
17.
 
Sony RX100 VI 102 mm 58 mm 43 mm 301 g 240 n Jun 2018 1,199i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision 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. The G7X Mark III was launched at a lower price than the E-M1 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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Sensor comparison

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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon G7 X Mark III features an one-inch sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 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 G7X Mark III has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.

Canon G7 X Mark III and Olympus E-M1 III sensor measures

With 20.2MP, the E-M1 III offers a higher resolution than the G7X Mark III (20MP), but the E-M1 III nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 2.41μm for the G7X Mark III) due to its larger sensor. Moreover, the E-M1 III is a somewhat more recent model (by 7 months) than the G7X Mark III, 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-M1 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The E-M1 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the G7X Mark III, the E-M1 III has the capacity to capture high quality composite images (80MP) 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 G7 X Mark III has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 125-25600. The corresponding ISO settings for the Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

G7X Mark III versus E-M1 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.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon G7 X Mark III 1-inch 20.0 5472 36484K/30p........
2.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
3.
 
Canon G5 X Mark II 1-inch 20.0 5472 36484K/30p........
4.
 
Canon SX740 1/2.3 20.2 5184 38884K/30p........
5.
 
Canon G7 X Mark II 1-inch 20.0 5472 36481080/60p........
6.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p........
7.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
8.
 
Leica C-LUX 1-inch 20.0 5472 36484K/30p........
9.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p........
10.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
11.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
12.
 
Panasonic FZ1000 II 1-inch 20.0 5472 36484K/30p........
13.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
14.
 
Panasonic ZS200 1-inch 20.0 5472 36484K/30p........
15.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........
16.
 
Sony ZV-1 1-inch 20.0 5472 36484K/30p........
17.
 
Sony RX100 VI 1-inch 20.0 5472 36484K/30p........

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 III has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G7X Mark III relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon G7 X Mark III and Olympus E-M1 III in connection with corresponding information for a sample of similar cameras.

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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
1.
 
Canon G7 X Mark IIInone n 3.0 1040 tilting Y 1/2000s 30 Y Y
2.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
3.
 
Canon G5 X Mark II2360 n 3.0 1040 tilting Y 1/2000s 30 Y Y
4.
 
Canon SX740none n 3.0 922 tilting n 1/3200s 10.0 Y Y
5.
 
Canon G7 X Mark IInone n 3.0 1040 tilting Y 1/2000s 8.0 Y Y
6.
 
Canon G5 X2360 n 3.0 1040 swivel Y 1/2000s 5.9 Y Y
7.
 
Canon G7 Xnone n 3.0 1040 tilting Y 1/2000s 6.5 Y Y
8.
 
Leica C-LUX2330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y
9.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
10.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
11.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
12.
 
Panasonic FZ1000 II2360 n 3.0 1240 swivel Y 1/4000s 12.0 Y Y
13.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
14.
 
Panasonic ZS2002330 n 3.0 1240 fixed Y 1/2000s 10.0 Y Y
15.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
16.
 
Sony ZV-1none n 3.0 922 swivel Y 1/2000s 24.0 n Y
17.
 
Sony RX100 VI2359 n 3.0 1229 tilting Y 1/2000s 24.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The G7X Mark III has one, while the E-M1 III does not. While the built-in flash of the G7X Mark III is not very powerful, it can at times be useful as a fill-in light.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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, both cameras under consideration feature an 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 G7 X Mark III and the Olympus E-M1 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.

Concerning the storage of imaging data, both the G7X Mark III and the E-M1 III write their files to SDXC cards. The E-M1 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the G7X Mark III only has one slot. The E-M1 III supports UHS-II cards (on its first slot), while the G7X Mark III can use UHS-I cards.

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Connectivity comparison

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 G7 X Mark III and Olympus OM-D E-M1 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon G7 X Mark III-stereomonoY-micro3.1Y-Y
2.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
3.
 
Canon G5 X Mark II-stereomono--micro3.1Y-Y
4.
 
Canon SX740-stereomono--micro2.0Y-Y
5.
 
Canon G7 X Mark II-stereomono--micro2.0YY-
6.
 
Canon G5 XYstereomono--mini2.0YY-
7.
 
Canon G7 X-stereomono--micro2.0YY-
8.
 
Leica C-LUX-stereomono--micro2.0Y--
9.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
10.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
11.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
12.
 
Panasonic FZ1000 IIYstereomonoY-micro2.0Y-Y
13.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
14.
 
Panasonic ZS200-stereomono--micro2.0Y-Y
15.
 
Panasonic G9YstereomonoYYfull3.0Y-Y
16.
 
Sony ZV-1YstereomonoY-micro2.0YYY
17.
 
Sony RX100 VI-stereomono--micro2.0YYY

It is notable that the E-M1 III has a hotshoe, which makes it possible to easily attach optional accessories, such as an external flash gun. The G7X Mark III does not feature such an accessory-socket.

Studio photographers will appreciate that the Olympus E-M1 III (unlike the G7X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the G7X Mark III and the E-M1 III are recent models that are part of the current product line-up. The G7X Mark III replaced the earlier Canon G7X Mark II, while the E-M1 III followed on from the Olympus E-M1 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 Olympus websites.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Canon G7 X Mark III or the Olympus E-M1 III – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Canon PowerShot G7 X Mark III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Faster burst: Shoots at higher frequency (30 vs 18 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has a lens built-in, whereas the E-M1 III requires a separate lens.
  • More compact: Is smaller (105x61mm vs 134x91mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-M1 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.
  • More heavily discounted: Has been on the market for longer (launched in July 2019).

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Reasons to prefer the Olympus OM-D E-M1 Mark III:

  • 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: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • Longer lasting: Gets more shots (420 versus 235) out of a single battery charge.
  • 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.
  • 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).
  • More modern: Was introduced somewhat (7 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1 III is the clear winner of the contest (19 : 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

G7X Mark III 08:19 E-M1 III

How about other alternatives? Do the specifications of the Canon G7 X Mark III and the Olympus E-M1 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the G7X Mark III and the E-M1 III in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X Mark III..+ +81/1004/5.. Jul 2019 749 i
2.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
3.
 
Canon G5 X Mark II4/5+82/100..4/5 Jul 2019 899 i
4.
 
Canon SX740..+..4/54/5 Jul 2018 399 i
5.
 
Canon G7 X Mark II4.5/5+ +81/1004.5/54.5/5 Feb 2016 699i
6.
 
Canon G5 X5/5+ +78/1004.5/54.5/5 Oct 2015 799i
7.
 
Canon G7 X4/5+ +77/1004.5/54.5/5 Sep 2014 699i
8.
 
Leica C-LUX......4.5/54/5 Jun 2018 1,049 i
9.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
10.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
11.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
12.
 
Panasonic FZ1000 II....83/1004.5/54.5/5 Feb 2019 899 i
13.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
14.
 
Panasonic ZS200..+ +81/1004.5/54.5/5 Feb 2018 799 i
15.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
16.
 
Sony ZV-14/5..85/1004/54.5/5 May 2020 799 i
17.
 
Sony RX100 VI4.5/5+ +83/1004/54.5/5 Jun 2018 1,199i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Canon G7 X Mark III:
Check Amazon price
Olympus E-M1 III:
Check Amazon price

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. 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 G7 X Mark III vs Olympus E-M1 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 G7 X Mark III Olympus E-M1 III
    Camera Type Fixed lens compact camera Mirrorless system camera
    Camera Lens 24-100mm f/1.8-2.8 Micro Four Thirds lenses
    Launch Date July 2019 February 2020
    Launch Price USD 749 USD 1,799
    Sensor Specs Canon G7 X Mark III Olympus E-M1 III
    Sensor Technology BSI-CMOS CMOS
    Sensor Format 1" Sensor Four Thirds Sensor
    Sensor Size 13.2 x 8.8 mm 17.3 x 13.0 mm
    Sensor Area 116.16 mm2 224.9 mm2
    Sensor Diagonal 15.9 mm 21.6 mm
    Crop Factor 2.7x 2.0x
    Sensor Resolution 20 Megapixels 20.2 Megapixels
    Image Resolution 5472 x 3648 pixels 5184 x 3888 pixels
    Pixel Pitch 2.41 μm 3.34 μm
    Pixel Density 17.18 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 125 - 12,800 ISO 200 - 25,600 ISO
    ISO Boost 125 - 25,600 ISO 64 - 25,600 ISO
    Image Processor DIGIC 8 TruePic IX
    Screen Specs Canon G7 X Mark III Olympus E-M1 III
    Viewfinder Type no viewfinder Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.83x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon G7 X Mark III Olympus E-M1 III
    Focus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/8000s
    Continuous Shooting 30 shutter flaps/s 18 shutter flaps/s
    Electronic Shutterup to 1/25600sup to 1/32000s
    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 SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Canon G7 X Mark III Olympus E-M1 III
    External Flash no Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.1 USB 3.1
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Canon G7 X Mark III Olympus E-M1 III
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type NB-13L BLH-1
    Battery Life (CIPA)235 shots per charge420 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 105 x 61 x 41 mm
    (4.1 x 2.4 x 1.6 in)
    134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    Camera Weight 304 g (10.7 oz) 580 g (20.5 oz)

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