Olympus E-M10 III versus Canon G7 X Mark II
The Olympus OM-D E-M10 Mark III and the Canon PowerShot G7 X Mark II are two digital cameras that were officially introduced, respectively, in August 2017 and February 2016. The E-M10 III is a mirrorless interchangeable lens camera, while the G7X Mark II is a fixed lens compact. The cameras are based on a Four Thirds (E-M10 III) and an one-inch sensor. The Olympus has a resolution of 15.9 megapixel, whereas the Canon provides 20 MP.
The side-by-side display below illustrates the physical size and weight of the Olympus E-M10 III and the Canon G7 X Mark II. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures 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 – the E-M10 III – represents 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G7 X Mark II is considerably smaller (37 percent) than the Olympus E-M10 III. In this context, it is worth noting that neither the E-M10 III nor the G7X Mark II are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X Mark II 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.
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 comparisons there.
|Camera Body Specifications
|Olympus E-M10 III (⇒ rgt)||122 mm||84 mm||50 mm||410 g||330||no||2017||649||latest||check|
|Canon G7 X Mark II (⇒ lft)||106 mm||61 mm||42 mm||319 g||265||no||2016||699||latest||check|
|Canon M6 (⇒ lft | rgt)||112 mm||68 mm||45 mm||390 g||295||no||2017||779||latest||check|
|Canon M3 (⇒ lft | rgt)||111 mm||68 mm||44 mm||366 g||250||no||2015||679||discont.||check|
|Canon T6i (⇒ lft | rgt)||132 mm||101 mm||78 mm||555 g||440||no||2015||749||discont.||check|
|Canon T6s (⇒ lft | rgt)||132 mm||101 mm||78 mm||565 g||440||no||2015||849||discont.||check|
|Canon G5 X (⇒ lft | rgt)||112 mm||76 mm||44 mm||353 g||210||no||2015||799||latest||check|
|Fujifilm X-E2S (⇒ lft | rgt)||129 mm||75 mm||37 mm||350 g||350||no||2016||699||discont.||check|
|Olympus PEN-F (⇒ lft | rgt)||125 mm||72 mm||37 mm||427 g||330||no||2016||1,199||latest||check|
|Olympus E-M10 II (⇒ lft | rgt)||120 mm||83 mm||47 mm||390 g||320||no||2015||799||discont.||check|
|Olympus E-M5 II (⇒ lft | rgt)||124 mm||85 mm||45 mm||469 g||310||YES||2015||1,099||latest||check|
|Olympus E-M10 (⇒ lft | rgt)||119 mm||82 mm||46 mm||396 g||320||no||2014||699||discont.||check|
|Olympus E-P5 (⇒ lft | rgt)||122 mm||69 mm||37 mm||420 g||330||no||2013||999||discont.||check|
|Olympus E-620 (⇒ lft | rgt)||130 mm||94 mm||60 mm||521 g||500||no||2009||699||discont.||check|
|Panasonic GX850 (⇒ lft | rgt)||107 mm||65 mm||33 mm||269 g||210||no||2017||549||latest||check|
|Panasonic GX85 (⇒ lft | rgt)||122 mm||71 mm||44 mm||426 g||290||no||2016||799||latest||check|
|Panasonic ZS100 (⇒ lft | rgt)||111 mm||65 mm||44 mm||312 g||300||no||2016||699||latest||check|
The listed 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.
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. 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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Olympus E-M10 III features a Four Thirds sensor and the Canon G7 X Mark II an one-inch sensor. The sensor area in the G7X Mark II is 48 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 2.7. The sensor in the E-M10 III has a native 4:3 aspect ratio, while the one in the G7X Mark II offers a 3:2 aspect.
Despite having a smaller sensor, the G7X Mark II offers a higher resolution of 20 megapixel, compared with 15.9 MP of the 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 6 months) than the G7X Mark II, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Olympus E-M10 III (⇒ rgt)||Four Thirds||15.9||4608||3456||4K/30p||..||..||..||..|
|Canon G7 X Mark II (⇒ lft)||1-inch||20.0||5472||3648||1080/60p||-||-||-||-|
|Canon M6 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon M3 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72|
|Canon T6i (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||22.7||12.0||919||71|
|Canon T6s (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70|
|Canon G5 X (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||-||-||-||-|
|Fujifilm X-E2S (⇒ lft | rgt)||APS-C||16.0||4896||3264||1080/60p||-||-||-||-|
|Olympus PEN-F (⇒ lft | rgt)||Four Thirds||20.2||5184||3888||1080/60p||23.1||12.4||894||74|
|Olympus E-M10 II (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|Olympus E-M5 II (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73|
|Olympus E-M10 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|Olympus E-P5 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|Olympus E-620 (⇒ lft | rgt)||Four Thirds||12.2||4032||3024||no||21.3||10.3||536||55|
|Panasonic GX850 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||4K/30p||..||..||..||..|
|Panasonic GX85 (⇒ lft | rgt)||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|Panasonic ZS100 (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.8||12.5||559||70|
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the E-M10 III provides a higher video resolution than the G7X Mark II. It can shoot video footage at 4K/30p, while the Canon is limited to 1080/60p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M10 III has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G7X Mark II relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Olympus E-M10 III and Canon G7 X Mark II in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Olympus E-M10 III (⇒ rgt)||2360||no||3.0||1040||tilting||YES||4000||8.6||5.8||YES|
|Canon G7 X Mark II (⇒ lft)||no||no||3.0||1040||tilting||YES||2000||8.0||7||no|
|Canon M6 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||9.0||5||no|
|Canon M3 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||4.2||5||no|
|Canon T6i (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon T6s (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon G5 X (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||2000||5.9||7||no|
|Fujifilm X-E2S (⇒ lft | rgt)||2360||no||3.0||1040||fixed||no||4000||7.0||7||no|
|Olympus PEN-F (⇒ lft | rgt)||2360||no||3.0||1037||swivel||YES||8000||10.0||no||YES|
|Olympus E-M10 II (⇒ lft | rgt)||2360||no||3.0||1040||tilting||YES||4000||8.0||5.8||YES|
|Olympus E-M5 II (⇒ lft | rgt)||2360||no||3.0||1037||swivel||YES||8000||10.0||no||YES|
|Olympus E-M10 (⇒ lft | rgt)||1440||no||3.0||1037||tilting||YES||4000||8.0||5.8||YES|
|Olympus E-P5 (⇒ lft | rgt)||no||no||3.0||1037||tilting||YES||8000||9.0||7||YES|
|Olympus E-620 (⇒ lft | rgt)||optical||no||2.7||230||swivel||no||4000||4.0||12||YES|
|Panasonic GX850 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||500||10.0||4||no|
|Panasonic GX85 (⇒ lft | rgt)||2765||no||3.0||1040||tilting||YES||4000||8.0||6||YES|
|Panasonic ZS100 (⇒ lft | rgt)||1166||no||3.0||1040||fixed||YES||2000||10.0||YES||YES|
Both the E-M10 III and the G7X Mark II are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The G7X Mark II replaced the earlier Canon G7 X, while the E-M10 III followed on from the Olympus E-M10 II.
So how do things add up? Is the Olympus E-M10 III better than the Canon G7 X Mark II or vice versa? A synthesis of the relative strong points of each of the models is listed below.
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: Features a larger and more technologically advanced imaging sensor.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- Faster shutter: Has a higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (330 versus 265) on a single battery charge.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More modern: Is somewhat more recent (announced 1 year and 6 months after the G7X Mark II).
Advantages of the Canon PowerShot G7 X Mark II:
- More detail: Has more megapixels (20 vs 15.9MP), which boosts linear resolution by 14%.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Ready to shoot: Has an integrated lens, whereas the E-M10 III necessitates an extra lens.
- More compact: Is smaller (106x61mm vs 122x84mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens build in (unlike the E-M10 III).
- More heavily discounted: Has been on the market for longer (launched in August 2017).
If the count of individual advantages (bullet points above) is taken as a guide, the E-M10 III emerges as the winner of the contest (9 : 6 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.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the E-M10 III and the G7X Mark II in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable. This is where reviews by experts come in. The adjacent table relays the overall verdicts of several of the most popular camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Olympus E-M10 III (⇒ rgt)||Rec||80/100||4.5/5||..||4.5/5||2017||649||latest||check|
|Canon G7 X Mark II (⇒ lft)||HiRec||81/100 Silver||4.5/5||4/5||4.5/5||2016||699||latest||check|
|Canon M6 (⇒ lft | rgt)||-||80/100 Silver||4/5||4.5/5||4/5||2017||779||latest||check|
|Canon M3 (⇒ lft | rgt)||reviewed||75/100||4.5/5||4.5/5||4/5||2015||679||discont.||check|
|Canon T6i (⇒ lft | rgt)||-||75/100||4.5/5||4.5/5||4.5/5||2015||749||discont.||check|
|Canon T6s (⇒ lft | rgt)||Rec||77/100 Silver||4.5/5||4.5/5||4.5/5||2015||849||discont.||check|
|Canon G5 X (⇒ lft | rgt)||HiRec||78/100 Silver||4.5/5||4/5||4.5/5||2015||799||latest||check|
|Fujifilm X-E2S (⇒ lft | rgt)||-||77/100||4.5/5||-||4.5/5||2016||699||discont.||check|
|Olympus PEN-F (⇒ lft | rgt)||-||82/100 Silver||4.5/5||4.5/5||5/5||2016||1,199||latest||check|
|Olympus E-M10 II (⇒ lft | rgt)||HiRec||80/100 Silver||5/5||5/5||5/5||2015||799||discont.||check|
|Olympus E-M5 II (⇒ lft | rgt)||HiRec||81/100 Silver||5/5||4.5/5||5/5||2015||1,099||latest||check|
|Olympus E-M10 (⇒ lft | rgt)||-||80/100 Gold||5/5||4.5/5||5/5||2014||699||discont.||check|
|Olympus E-P5 (⇒ lft | rgt)||HiRec||78/100 Silver||4.5/5||4.5/5||5/5||2013||999||discont.||check|
|Olympus E-620 (⇒ lft | rgt)||88/100||72/100 HiRec||4.5/5||reviewed||5/5||2009||699||discont.||check|
|Panasonic GX850 (⇒ lft | rgt)||Rec||76/100||4.5/5||-||4.5/5||2017||549||latest||check|
|Panasonic GX85 (⇒ lft | rgt)||HiRec||82/100 Silver||5/5||4.5/5||5/5||2016||799||latest||check|
|Panasonic ZS100 (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4/5||4.5/5||2016||699||latest||check|
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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, please contact me, and I will try to locate and add the respective data to the application.
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