Canon G7 X Mark III vs Olympus E-M5
The Canon PowerShot G7 X Mark III and the Olympus OM-D E-M5 are two digital cameras that were announced, respectively, in July 2019 and February 2012. The G7X Mark III is a fixed lens compact, while the E-M5 is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (G7X Mark III) and a Four Thirds (E-M5) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 15.9 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

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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-M5? 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
The physical size and weight of the Canon G7 X Mark III and the Olympus E-M5 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.
Both cameras are available in two different colors (black, silver).



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M5 is considerably larger (70 percent) than the Canon G7 X Mark III. It is noteworthy in this context that the E-M5 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-M5 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-M5 and their specifications in the Micro Four Thirds Lens Catalog.
Concerning battery life, the G7X Mark III gets 235 shots out of its Canon NB-13L battery, while the E-M5 can take 360 images on a single charge of its Olympus BLN-1 power pack. The power pack in the G7X Mark III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
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, you can use the CAM-parator app to select your camera combination among a large number of options.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G7 X Mark III | 105 mm | 61 mm | 41 mm | 304 g | 235 | n | Jul 2019 | US$ 749 | amazon.com | |
| 2. | Olympus E-M5 | 122 mm | 89 mm | 43 mm | 425 g | 360 | Y | Feb 2012 | US$ 1 299 | ebay.com | |
| 3. | Canon G5 X | 112 mm | 76 mm | 44 mm | 353 g | 210 | n | Oct 2015 | US$ 799 | ebay.com | |
| 4. | Canon G5 X Mark II | 111 mm | 61 mm | 46 mm | 340 g | 230 | n | Jul 2019 | US$ 899 | ebay.com | |
| 5. | Canon G7 X | 103 mm | 60 mm | 40 mm | 304 g | 210 | n | Sep 2014 | US$ 699 | ebay.com | |
| 6. | Canon G7 X Mark II | 106 mm | 61 mm | 42 mm | 319 g | 265 | n | Feb 2016 | US$ 699 | ebay.com | |
| 7. | Canon M50 | 116 mm | 88 mm | 59 mm | 390 g | 235 | n | Feb 2018 | US$ 779 | ebay.com | |
| 8. | Canon SX740 | 110 mm | 64 mm | 40 mm | 299 g | 265 | n | Jul 2018 | US$ 399 | amazon.com | |
| 9. | Fujifilm XF10 | 113 mm | 64 mm | 41 mm | 279 g | 330 | n | Jul 2018 | US$ 499 | ebay.com | |
| 10. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | US$ 1 399 | ebay.com | |
| 11. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | US$ 1 099 | ebay.com | |
| 12. | Olympus E-M10 | 119 mm | 82 mm | 46 mm | 396 g | 320 | n | Jan 2014 | US$ 699 | ebay.com | |
| 13. | Olympus E-M10 II | 120 mm | 83 mm | 47 mm | 390 g | 320 | n | Aug 2015 | US$ 649 | ebay.com | |
| 14. | Olympus E-P5 | 122 mm | 69 mm | 37 mm | 420 g | 330 | n | May 2013 | US$ 999 | ebay.com | |
| 15. | Panasonic TZ200 | 111 mm | 65 mm | 45 mm | 340 g | 370 | n | Feb 2018 | US$ 799 | amazon.com | |
| 16. | Sony RX100 VI | 102 mm | 58 mm | 43 mm | 301 g | 240 | n | Jun 2018 | US$ 1 199 | ebay.com | |
| 17. | Sony ZV-1 | 105 mm | 60 mm | 44 mm | 294 g | 260 | n | May 2020 | US$ 799 | ebay.com | |
| Note: 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-M5, despite having a lens built in. 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
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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 tend to be more expensive and 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-M5 a Four Thirds sensor. The sensor area in the E-M5 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-M5 offers a 4:3 aspect.

Despite having a smaller sensor, the Canon G7 X Mark III offers a higher resolution of 20 megapixels, compared with 15.9 MP of the Olympus E-M5. This megapixels 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-M5). However, it should be noted that the G7X Mark III is much more recent (by 7 years and 5 months) than the E-M5, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the Canon G7 X Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X Mark III for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Olympus E-M5 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.
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-M5 are ISO 200 to ISO 25600 (no boost).
In terms of underlying technology, the G7X Mark III is build around a BSI-CMOS sensor, while the E-M5 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

| 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 | 3648 | 4K/30p | 22.2 | 12.4 | 583 | 65 | |
| 2. | Olympus E-M5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60i | 22.8 | 12.3 | 826 | 71 | |
| 3. | Canon G5 X | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 21.4 | 12.3 | 471 | 62 | |
| 4. | Canon G5 X Mark II | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 22.2 | 12.4 | 583 | 65 | |
| 5. | Canon G7 X | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 23.0 | 12.7 | 556 | 71 | |
| 6. | Canon G7 X Mark II | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 21.8 | 11.9 | 260 | 62 | |
| 7. | Canon M50 | APS-C | 24.0 | 6000 | 4000 | 4K/24p | 23.8 | 13.3 | 1684 | 81 | |
| 8. | Canon SX740 | 1/2.3 | 20.2 | 5184 | 3888 | 4K/30p | 20.6 | 12.1 | 1050 | 51 | |
| 9. | Fujifilm XF10 | APS-C | 24.0 | 6000 | 4000 | 4K/15p | 24.0 | 13.4 | 1844 | 83 | |
| 10. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
| 11. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
| 12. | Olympus E-M10 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.3 | 884 | 72 | |
| 13. | Olympus E-M10 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.1 | 12.5 | 842 | 73 | |
| 14. | Olympus E-P5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.4 | 895 | 72 | |
| 15. | Panasonic TZ200 | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 22.0 | 12.2 | 449 | 64 | |
| 16. | Sony RX100 VI | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 22.1 | 12.3 | 478 | 64 | |
| 17. | Sony ZV-1 | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 22.2 | 12.6 | 669 | 66 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
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 G7X Mark III provides a higher video resolution than the E-M5. It can shoot video footage at 4K/30p, while the Olympus is limited to 1080/60i.
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M5 has an electronic viewfinder (1440k 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-M5 in connection with corresponding information for a sample of similar cameras.

| Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G7 X Mark III | none | n | 3.0 / 1040 | tilting | Y | 1/2000s | 30/s | Y | Y | |
| 2. | Olympus E-M5 | 1440 | n | 3.0 / 610 | tilting | Y | 1/4000s | 9.0/s | n | Y | |
| 3. | Canon G5 X | 2360 | n | 3.0 / 1040 | swivel | Y | 1/2000s | 5.9/s | Y | Y | |
| 4. | Canon G5 X Mark II | 2360 | n | 3.0 / 1040 | tilting | Y | 1/2000s | 30/s | Y | Y | |
| 5. | Canon G7 X | none | n | 3.0 / 1040 | tilting | Y | 1/2000s | 6.5/s | Y | Y | |
| 6. | Canon G7 X Mark II | none | n | 3.0 / 1040 | tilting | Y | 1/2000s | 8.0/s | Y | Y | |
| 7. | Canon M50 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 10.0/s | Y | n | |
| 8. | Canon SX740 | none | n | 3.0 / 922 | tilting | n | 1/3200s | 10.0/s | Y | Y | |
| 9. | Fujifilm XF10 | none | n | 3.0 / 1040 | fixed | Y | 1/4000s | 6.0/s | Y | n | |
| 10. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 11. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 12. | Olympus E-M10 | 1440 | n | 3.0 / 1037 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
| 13. | Olympus E-M10 II | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
| 14. | Olympus E-P5 | optional | n | 3.0 / 1037 | tilting | Y | 1/8000s | 9.0/s | Y | Y | |
| 15. | Panasonic TZ200 | 2330 | n | 3.0 / 1240 | fixed | Y | 1/2000s | 10.0/s | Y | Y | |
| 16. | Sony RX100 VI | 2359 | n | 3.0 / 1229 | tilting | Y | 1/2000s | 24.0/s | Y | Y | |
| 17. | Sony ZV-1 | none | n | 3.0 / 922 | swivel | Y | 1/2000s | 24.0/s | n | n | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One difference between the cameras concerns the presence of an on-board flash. The G7X Mark III has one, while the E-M5 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.
The G7X Mark III has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the E-M5 does not have a selfie-screen.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, the G7X Mark III is one of those camera that have an additional 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 has 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-M5 write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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-M5 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G7 X Mark III | - | stereo / mono | Y | - | micro | 3.1 | Y | - | Y | |
| 2. | Olympus E-M5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 3. | Canon G5 X | Y | stereo / mono | - | - | mini | 2.0 | Y | Y | - | |
| 4. | Canon G5 X Mark II | - | stereo / mono | - | - | micro | 3.1 | Y | - | Y | |
| 5. | Canon G7 X | - | stereo / mono | - | - | micro | 2.0 | Y | Y | - | |
| 6. | Canon G7 X Mark II | - | stereo / mono | - | - | micro | 2.0 | Y | Y | - | |
| 7. | Canon M50 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 8. | Canon SX740 | - | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
| 9. | Fujifilm XF10 | - | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 10. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 11. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 12. | Olympus E-M10 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 13. | Olympus E-M10 II | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 14. | Olympus E-P5 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 15. | Panasonic TZ200 | - | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
| 16. | Sony RX100 VI | - | stereo / mono | - | - | micro | 2.0 | Y | Y | Y | |
| 17. | Sony ZV-1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y |
It is notable that the G7X Mark III has a microphone port, which is missing on the E-M5. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
The G7X Mark III is a recent model that features in the current product line-up of Canon. In contrast, the E-M5 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-M5 was succeeded by the Olympus E-M5 II. Further information on the features and operation of the G7X Mark III and E-M5 can be found, respectively, in the Canon G7 X Mark III Manual (free pdf) or the online Olympus E-M5 Manual.
Review summary
So what is the bottom line? Which of the two cameras – the Canon G7 X Mark III or the Olympus E-M5 – 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.

Advantages of the Canon PowerShot G7 X Mark III:
- More detail: Offers more megapixels (20 vs 15.9MP) with a 14% higher linear resolution.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 610k dots).
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (30 vs 9 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Has a lens built-in, whereas the E-M5 requires a separate lens.
- More compact: Is smaller (105x61mm vs 122x89mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-M5).
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 7 years and 5 months of technical progress since the E-M5 launch.

Reasons to prefer the Olympus OM-D E-M5:
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
- Longer lasting: Gets more shots (360 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.
- More heavily discounted: Has been around for much longer (launched in February 2012).
If the count of individual advantages (bullet points above) is taken as a guide, the G7X Mark III is the clear winner of the match-up (18 : 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. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon G7 X Mark III and the Olympus E-M5 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G7X Mark III or the E-M5. 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 why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G7 X Mark III | .. | + + | 4/5 | 81/100 | 4/5 | .. | Jul 2019 | US$ 749 | amazon.com | |
| 2. | Olympus E-M5 | 4/5 | + + | .. | 80/100 | 4.5/5 | 5/5 | Feb 2012 | US$ 1 299 | ebay.com | |
| 3. | Canon G5 X | 5/5 | + + | .. | 78/100 | 4.5/5 | 4.5/5 | Oct 2015 | US$ 799 | ebay.com | |
| 4. | Canon G5 X Mark II | 4/5 | + | 4/5 | 82/100 | .. | 4/5 | Jul 2019 | US$ 899 | ebay.com | |
| 5. | Canon G7 X | 4/5 | + + | .. | 77/100 | 4.5/5 | 4.5/5 | Sep 2014 | US$ 699 | ebay.com | |
| 6. | Canon G7 X Mark II | 4.5/5 | + + | .. | 81/100 | 4.5/5 | 4.5/5 | Feb 2016 | US$ 699 | ebay.com | |
| 7. | Canon M50 | .. | + | 4/5 | 79/100 | .. | 3.5/5 | Feb 2018 | US$ 779 | ebay.com | |
| 8. | Canon SX740 | .. | + | 3.5/5 | .. | 4/5 | 4/5 | Jul 2018 | US$ 399 | amazon.com | |
| 9. | Fujifilm XF10 | .. | .. | 4/5 | 75/100 | 4/5 | 4.5/5 | Jul 2018 | US$ 499 | ebay.com | |
| 10. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | US$ 1 399 | ebay.com | |
| 11. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | US$ 1 099 | ebay.com | |
| 12. | Olympus E-M10 | 4/5 | .. | .. | 80/100 | 5/5 | 5/5 | Jan 2014 | US$ 699 | ebay.com | |
| 13. | Olympus E-M10 II | 4.5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Aug 2015 | US$ 649 | ebay.com | |
| 14. | Olympus E-P5 | 5/5 | + + | .. | 78/100 | 4.5/5 | 5/5 | May 2013 | US$ 999 | ebay.com | |
| 15. | Panasonic TZ200 | .. | + + | 4.5/5 | 81/100 | 4.5/5 | 4.5/5 | Feb 2018 | US$ 799 | amazon.com | |
| 16. | Sony RX100 VI | 4.5/5 | + + | .. | 83/100 | 4/5 | 4.5/5 | Jun 2018 | US$ 1 199 | ebay.com | |
| 17. | Sony ZV-1 | 4/5 | + | 4/5 | 85/100 | 4/5 | 4.5/5 | May 2020 | US$ 799 | ebay.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted 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, please note that some of the review sites have changed their methodology and reporting over time.

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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.
- Canon 200D vs Canon G7 X Mark III
- Canon 5D Mark IV vs Olympus E-M5
- Canon 90D vs Olympus E-M5
- Canon G7 X Mark III vs Canon SX30
- Canon G7 X Mark III vs Fujifilm X-H2
- Canon G7 X Mark III vs Panasonic G100
- Canon G7 X Mark III vs Panasonic G90
- Canon G7 X Mark III vs Panasonic GH5 II
- Canon M vs Olympus E-M5
- Olympus E-400 vs Olympus E-M5
- Olympus E-M5 vs Olympus Stylus 1
- Olympus E-M5 vs Sony RX1R
Specifications: Canon G7 X Mark III vs Olympus E-M5
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 Model | Canon G7 X Mark III | Olympus E-M5 |
|---|---|---|
| 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 2012 |
| Launch Price | USD 749 | USD 1,299 |
| Sensor Specs | Canon G7 X Mark III | Olympus E-M5 |
| 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 | 15.9 Megapixels |
| Image Resolution | 5472 x 3648 pixels | 4608 x 3456 pixels |
| Pixel Pitch | 2.41 μm | 3.76 μm |
| Pixel Density | 17.18 MP/cm2 | 7.08 MP/cm2 |
| Moiré control | Anti-Alias filter | Anti-Alias filter |
| Movie Capability | 4K/30p Video | 1080/60i Video |
| ISO Setting | 125 - 12,800 ISO | 200 - 25,600 ISO |
| ISO Boost | 125 - 25,600 ISO | no Enhancement |
| Image Processor | DIGIC 8 | TruePic VI |
| DXO Sensor Quality (score) | .. | 71 |
| DXO Color Depth (bits) | .. | 22.8 |
| DXO Dynamic Range (EV) | .. | 12.3 |
| DXO Low Light (ISO) | .. | 826 |
| Screen Specs | Canon G7 X Mark III | Olympus E-M5 |
| Viewfinder Type | no viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.58x | |
| Viewfinder Resolution | 1440k dots | |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 1040k dots | 610k dots |
| LCD Attachment | Tilting screen | Tilting screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon G7 X Mark III | Olympus E-M5 |
| Focus System | Contrast-detect AF | Contrast-detect AF |
| Manual Focusing Aid | Focus Peaking | no Peaking Feature |
| Continuous Shooting | 30 shutter flaps/s | 9 shutter flaps/s |
| Electronic Shutter | up to 1/25600s | no E-Shutter |
| Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
| Image Stabilization | Lens-based stabilization | In-body stabilization |
| Fill Flash | Built-in Flash | no On-Board Flash |
| Storage Medium | SDXC cards | SDXC cards |
| Single or Dual Card Slots | Single card slot | Single card slot |
| UHS card support | UHS-I | UHS-I |
| Connectivity Specs | Canon G7 X Mark III | Olympus E-M5 |
| External Flash | no Hotshoe | Hotshoe |
| USB Connector | USB 3.1 | USB 2.0 |
| HDMI Port | micro HDMI | mini HDMI |
| Microphone Port | External MIC port | no MIC socket |
| Wifi Support | Wifi built-in | no Wifi |
| Bluetooth Support | Bluetooth built-in | no Bluetooth |
| Body Specs | Canon G7 X Mark III | Olympus E-M5 |
| Environmental Sealing | not weather sealed | Weathersealed body |
| Battery Type | Canon NB-13L | Olympus BLN-1 |
| Battery Life (CIPA) | 235 shots per charge | 360 shots per charge |
| In-Camera Charging | USB charging | no USB charging |
| Body Dimensions |
105 x 61 x 41 mm (4.1 x 2.4 x 1.6 in) |
122 x 89 x 43 mm (4.8 x 3.5 x 1.7 in) |
| Camera Weight | 304 g (10.7 oz) | 425 g (15.0 oz) |

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