Canon G7 X vs Olympus E-M10 II

The Canon PowerShot G7 X and the Olympus OM-D E-M10 Mark II are two digital cameras that were officially introduced, respectively, in September 2014 and August 2015. The G7X is a fixed lens compact, while the E-M10 II is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (G7X) and a Four Thirds (E-M10 II) 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.

Headline Specifications

Canon G7 X		Olympus E-M10 II
Fixed lens compact camera		Mirrorless system camera
24-100mm f/1.8-2.8		Micro Four Thirds lenses
20 MP, 1" Sensor		15.9 MP, Four Thirds Sensor
1080/60p Video		1080/60p Video
ISO 125-12800		ISO 200-25600
No viewfinder, LCD framing		Electronic viewfinder (2360k dots)
3.0" LCD, 1040k dots		3.0" LCD, 1040k dots
Tilting touchscreen		Tilting touchscreen
6.5 shutter flaps per second		8 shutter flaps per second
Lens-based stabilization		In-body stabilization
210 shots per battery charge		320 shots per battery charge
103 x 60 x 40 mm, 304 g		120 x 83 x 47 mm, 390 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 X and the Olympus OM-D E-M10 Mark II? 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 side-by-side display below illustrates the physical size and weight of the Canon G7 X and the Olympus E-M10 II. 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 width, height and depth dimensions are rounded to the nearest millimeter.

The E-M10 II can be obtained in three different colors (black, silver, brown), while the G7X is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 II is considerably larger (61 percent) than the Canon G7 X. In this context, it is worth noting that neither the G7X nor the E-M10 II are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X has a lens built in, whereas the E-M10 II 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-M10 II and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the G7X gets 210 shots out of its NB-13L battery, while the E-M10 II can take 320 images on a single charge of its BLS-50 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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)	Camera Model
	Canon G7 X»	4.1 in	2.4 in	1.6 in	10.7 oz	210	n	Sep 2014	699	-		Canon G7 X
	Olympus E-M10 II«	4.7 in	3.3 in	1.9 in	13.8 oz	320	n	Aug 2015	649	-		Olympus E-M10 II
	Canon G7 X Mark III« »	4.1 in	2.4 in	1.6 in	10.7 oz	235	n	Jul 2019	749			Canon G7 X Mark III
	Canon G7 X Mark II« »	4.2 in	2.4 in	1.7 in	11.3 oz	265	n	Feb 2016	699	-		Canon G7 X Mark II
	Canon G5 X« »	4.4 in	3.0 in	1.7 in	12.5 oz	210	n	Oct 2015	799	-		Canon G5 X
	Canon G9 X« »	3.9 in	2.3 in	1.2 in	7.4 oz	220	n	Oct 2015	529	-		Canon G9 X
	Canon M3« »	4.4 in	2.7 in	1.7 in	12.9 oz	250	n	Feb 2015	679	-		Canon M3
	Canon M10« »	4.3 in	2.6 in	1.4 in	10.6 oz	255	n	Oct 2015	499	-		Canon M10
	Canon T6i« »	5.2 in	4.0 in	3.1 in	19.6 oz	440	n	Feb 2015	749	-		Canon T6i
	Olympus E-M10 III« »	4.8 in	3.3 in	2.0 in	14.5 oz	330	n	Aug 2017	649			Olympus E-M10 III
	Olympus E-PL8« »	4.5 in	2.6 in	1.5 in	12.6 oz	350	n	Sep 2016	549	-		Olympus E-PL8
	Olympus E-M10« »	4.7 in	3.2 in	1.8 in	14.0 oz	320	n	Jan 2014	699	-		Olympus E-M10
	Olympus E-P5« »	4.8 in	2.7 in	1.5 in	14.8 oz	330	n	May 2013	999	-		Olympus E-P5
	Olympus E-PL5« »	4.4 in	2.5 in	1.5 in	11.5 oz	360	n	Sep 2012	599	-		Olympus E-PL5
	Sony RX100 IV« »	4.0 in	2.3 in	1.6 in	10.5 oz	280	n	Jun 2015	999	-		Sony RX100 IV
	Sony RX100 III« »	4.0 in	2.3 in	1.6 in	10.2 oz	320	n	May 2014	799	-		Sony RX100 III
	Sony RX100 II« »	4.0 in	2.3 in	1.5 in	9.9 oz	350	n	Jun 2013	749	-		Sony RX100 II
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Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. 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

The size of the sensor inside a digital camera is one of the key determinants 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon G7 X features an one-inch sensor and the Olympus E-M10 II a Four Thirds sensor. The sensor area in the E-M10 II 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 has a native 3:2 aspect ratio, while the one in the E-M10 II offers a 4:3 aspect.

Despite having a smaller sensor, the Canon G7 X offers a higher resolution of 20 megapixels, compared with 15.9 MP of the Olympus E-M10 II. 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-M10 II). Moreover, it should be noted that the E-M10 II is a somewhat more recent model (by 11 months) than the G7X, 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 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon G7 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Olympus E-M10 II are 23 x 17.3 inch or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inch or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inch or 39 x 29.3 cm for excellent quality prints.

The Canon PowerShot G7 X has a native sensitivity range from ISO 125 to ISO 12800. The corresponding ISO settings for the Olympus OM-D E-M10 Mark II are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/60p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M10 II has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G7X relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon G7 X, the Olympus E-M10 II, and comparable cameras.

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 E-M10 II 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 and the Olympus E-M10 II 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 and the E-M10 II 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 and Olympus OM-D E-M10 Mark II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

It is notable that the E-M10 II has a hotshoe, which makes it possible to easily attach optional accessories, such as an external flash gun. The G7X does not feature such an accessory-socket.

Both the G7X and the E-M10 II have been discontinued, but can regularly be found used on eBay. The G7X was replaced by the Canon G7 X Mark II, while the E-M10 II was followed by the Olympus E-M10 III. 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.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Canon G7 X or the Olympus E-M10 II – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon PowerShot G7 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 selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Ready to shoot: Has a lens built-in, whereas the E-M10 II requires a separate lens.
• More compact: Is smaller (103x60mm vs 120x83mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-M10 II).
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• More heavily discounted: Has been on the market for longer (launched in September 2014).

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

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better low-light sensitivity: Can shoot in dim conditions (0.6 stops ISO advantage).
• 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.
• Faster burst: Shoots at higher frequency (8 vs 6.5 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• Longer lasting: Gets more shots (320 versus 210) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More modern: Was introduced somewhat (11 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the E-M10 II emerges as the winner of the match-up (10 : 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. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 and the Olympus E-M10 II 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 says little about, for example, the shooting experience and imaging performance of the G7X and the E-M10 II 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 following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Canon G7 X»	+ +	77/100	4.5/5	3.5/5	4.5/5	Sep 2014	699	-		Canon G7 X
	Olympus E-M10 II«	+ +	80/100	5/5	5/5	5/5	Aug 2015	649	-		Olympus E-M10 II
	Canon G7 X Mark III« »	+ +	-	4/5	-	-	Jul 2019	749			Canon G7 X Mark III
	Canon G7 X Mark II« »	+ +	81/100	4.5/5	4/5	4.5/5	Feb 2016	699	-		Canon G7 X Mark II
	Canon G5 X« »	+ +	78/100	4.5/5	4/5	4.5/5	Oct 2015	799	-		Canon G5 X
	Canon G9 X« »	+ +	-	4.5/5	4/5	4.5/5	Oct 2015	529	-		Canon G9 X
	Canon M3« »	o	75/100	4.5/5	4.5/5	4/5	Feb 2015	679	-		Canon M3
	Canon M10« »	-	-	-	o	4/5	Oct 2015	499	-		Canon M10
	Canon T6i« »	-	75/100	4.5/5	4.5/5	4.5/5	Feb 2015	749	-		Canon T6i
	Olympus E-M10 III« »	+	80/100	4.5/5	4/5	4.5/5	Aug 2017	649			Olympus E-M10 III
	Olympus E-PL8« »	-	-	4.5/5	-	4/5	Sep 2016	549	-		Olympus E-PL8
	Olympus E-M10« »	-	80/100	5/5	4.5/5	5/5	Jan 2014	699	-		Olympus E-M10
	Olympus E-P5« »	+ +	78/100	4.5/5	4.5/5	5/5	May 2013	999	-		Olympus E-P5
	Olympus E-PL5« »	+ +	-	4.5/5	4.5/5	4.5/5	Sep 2012	599	-		Olympus E-PL5
	Sony RX100 IV« »	+ +	85/100	4/5	4.5/5	4.5/5	Jun 2015	999	-		Sony RX100 IV
	Sony RX100 III« »	+ +	82/100	4.5/5	4.5/5	5/5	May 2014	799	-		Sony RX100 III
	Sony RX100 II« »	+ +	79/100	4.5/5	5/5	4.5/5	Jun 2013	749	-		Sony RX100 II
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated 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. A score, therefore, has to be seen in close connection to the price and market introduction time 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, 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 make a corresponding selection in the search boxes 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.

Specifications: Canon G7 X vs Olympus E-M10 II

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.

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