Canon 7D II vs G7X Mark III
The Canon EOS 7D Mark II and the Canon PowerShot G7 X Mark III are two digital cameras that were revealed to the public, respectively, in September 2014 and July 2019. The 7D Mark II is a DSLR, while the G7X Mark III is a fixed lens compact. The cameras are based on an APS-C (7D Mark II) and an one-inch (G7X Mark III) sensor. Both cameras offer a resolution of 20 megapixels.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 7D II||Canon G7 X Mark III|
|Digital single lens reflex||Fixed lens compact camera|
|Canon EF mount lenses||24-100mm f/1.8-2.8|
|20 MP, APS-C Sensor||20 MP, 1" Sensor|
|1080/60p Video||4K/30p Video|
|ISO 100-16,000 (100 - 51,200)||ISO 125-12,800 (125 - 25,600)|
|Optical viewfinder||No viewfinder, LCD framing|
|3.0 LCD, 1040k dots||3.0 LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|10 shutter flaps per second||30 shutter flaps per second|
|Weathersealed body||not weather sealed|
|670 shots per battery charge||235 shots per battery charge|
|149 x 112 x 78 mm, 910 g||105 x 61 x 41 mm, 304 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 7D Mark II and the Canon PowerShot G7 X 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.
The side-by-side display below illustrates the physical size and weight of the Canon 7D II and the Canon G7 X Mark III. The two cameras are presented according to their relative size. 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.
The G7X Mark III can be obtained in two different colors (black, silver), while the 7D Mark II 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 Canon G7 X Mark III is considerably smaller (62 percent) than the Canon 7D II. It is worth mentioning in this context that the 7D Mark II is splash and dust resistant, 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 7D Mark 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 7D Mark II and their specifications in the Canon EF Lens Catalog.
Concerning battery life, the 7D Mark II gets 670 shots out of its LP-E6N battery, while the G7X Mark III can take 235 images on a single charge of its NB-13L power pack. The power pack in the G7X Mark III can be charged via the USB port, 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. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon 7D II||149 mm||112 mm||78 mm||910 g||670||Y||Sep 2014||1,799|
|Canon G7 X Mark III||105 mm||61 mm||41 mm||304 g||235||n||Jul 2019||749|
|Canon G5 X Mark II||111 mm||61 mm||46 mm||340 g||230||n||Jul 2019||899|
|Canon SX740||110 mm||64 mm||40 mm||299 g||265||n||Jul 2018||399|
|Canon 6D Mark II||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999|
|Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|Canon G7 X Mark II||106 mm||61 mm||42 mm||319 g||265||n||Feb 2016||699|
|Canon G3 X||123 mm||77 mm||105 mm||733 g||300||Y||Jun 2015||999|
|Canon G5 X||112 mm||76 mm||44 mm||353 g||210||n||Oct 2015||799|
|Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699|
|Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199|
|Canon 6D||145 mm||111 mm||71 mm||770 g||1090||Y||Sep 2012||2,099|
|Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|Canon 7D||148 mm||111 mm||74 mm||860 g||800||Y||Sep 2009||1,699|
|Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999|
|Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199|
|Sony RX10 II||129 mm||88 mm||102 mm||813 g||400||Y||Jun 2015||1,299|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The G7X Mark III was launched at a lower price than the 7D Mark II, 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon 7D II features an APS-C sensor and the Canon G7 X Mark III an one-inch sensor. The sensor area in the G7X Mark III is 65 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Even though the 7D Mark II has a larger sensor, both cameras offer the same resolution of 20 megapixels. This implies that the 7D Mark II has a lower pixel density and larger individual pixels (with a pixel pitch of 4.10μm versus 2.41μm for the G7X Mark III), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the G7X Mark III is much more recent (by 4 years and 9 months) than the 7D Mark II, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
The 7D Mark II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS 7D Mark II has a native sensitivity range from ISO 100 to ISO 16000, which can be extended to ISO 100-51200. The corresponding ISO settings for the Canon PowerShot G7 X Mark III are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 125-25600.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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.
|Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|Canon G7 X Mark III||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Canon G5 X Mark II||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85|
|Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|Canon G3 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||521||63|
|Canon G5 X||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Canon 6D||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82|
|Sony RX10 II||1-inch||20.0||5472||3648||4K/30p||23.0||12.6||531||70|
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 G7X Mark III provides a better video resolution than the 7D Mark II. It can shoot movie footage at 4K/30p, while the 7D Mark II is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the 7D Mark II has an optical viewfinder, which can be very useful 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 7D II and Canon G7 X Mark III in connection with corresponding information for a sample of similar cameras.
|Canon 7D II||optical||Y||3.0||1040||fixed||n||1/8000s||10.0||Y||n|
|Canon G7 X Mark III||none||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|Canon G5 X Mark II||2360||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|Canon 6D Mark II||optical||Y||3.0||1040||swivel||Y||1/4000s||6.5||n||n|
|Canon G7 X Mark II||none||n||3.0||1040||tilting||Y||1/2000s||8.0||Y||Y|
|Canon G3 X||optional||n||3.2||1620||tilting||Y||1/2000s||5.9||Y||Y|
|Canon G5 X||2360||n||3.0||1040||swivel||Y||1/2000s||5.9||Y||Y|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y|
|Sony RX10 II||2359||Y||3.0||1229||tilting||n||1/3200s||14.0||Y||Y|
One feature that is present on the 7D Mark II, but is missing on the G7X Mark III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.The G7X Mark III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 7D Mark II 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 7D II and the Canon G7 X Mark 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.
The 7D Mark II writes its imaging data to Compact Flash or SDXC cards, while the G7X Mark III uses SDXC cards. The 7D Mark II 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. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 EOS 7D Mark II and Canon PowerShot G7 X Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Canon 7D II||Y||stereo||mono||Y||Y||mini||3.0||-||-||-|
|Canon G7 X Mark III||-||stereo||mono||Y||-||micro||3.1||Y||-||Y|
|Canon G5 X Mark II||-||stereo||mono||-||-||micro||3.1||Y||-||Y|
|Canon 6D Mark II||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y|
|Canon G7 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Canon G3 X||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-|
|Canon G5 X||Y||stereo||mono||-||-||mini||2.0||Y||Y||-|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Sony RX10 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the 7D Mark II has a hotshoe, while the G7X Mark III does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Studio photographers will appreciate that the Canon 7D II (unlike the G7X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the 7D Mark II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the 7D Mark II and the G7X Mark III are recent models that are part of the current product line-up. The 7D Mark II replaced the earlier Canon 7D, while the G7X Mark III followed on from the Canon G7X Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Which of the two cameras – the Canon 7D II or the Canon G7 X Mark III – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Canon EOS 7D Mark II:
- 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 optical viewfinder for image composition and settings control.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (670 versus 235) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- 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.
- More heavily discounted: Has been available for much longer (launched in September 2014).
Reasons to prefer the Canon PowerShot G7 X Mark III:
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (30 vs 10 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Ready to shoot: Comes with an integrated lens, while the 7D Mark II requires a separate lens.
- More compact: Is smaller (105x61mm vs 149x112mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the 7D Mark II).
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- 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 4 years and 9 months of technical progress since the 7D Mark II launch.
If the number of relative strengths (bullet points above) is taken as a guide, the G7X Mark III comes out slightly ahead of the 7D Mark II (14 : 13 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 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.
How about other alternatives? Do the specifications of the Canon 7D II and the Canon G7 X Mark III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the 7D Mark II and the G7X Mark III in practical situations. 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 summary-table relays the overall verdicts of several of the most popular 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.
|Canon 7D II||+||84/100||4/5||5/5||4.5/5||Sep 2014||1,799|
|Canon G7 X Mark III||+ +||81/100||4/5||..||..||Jul 2019||749|
|Canon G5 X Mark II||+||82/100||..||..||4/5||Jul 2019||899|
|Canon SX740||+||..||4/5||..||4/5||Jul 2018||399|
|Canon 6D Mark II||+||80/100||4.5/5||4/5||4/5||Jun 2017||1,999|
|Canon 80D||+ +||84/100||4.5/5||4.5/5||4.5/5||Feb 2016||1,199|
|Canon G7 X Mark II||+ +||81/100||4.5/5||4/5||4.5/5||Feb 2016||699|
|Canon G3 X||+||..||4.5/5||3.5/5||4/5||Jun 2015||999|
|Canon G5 X||+ +||78/100||4.5/5||4/5||4.5/5||Oct 2015||799|
|Canon G7 X||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699|
|Canon 70D||+ +||83/100||4.5/5||4.5/5||5/5||Jul 2013||1,199|
|Canon 6D||+ +||83/100||4.5/5||4.5/5||4.5/5||Sep 2012||2,099|
|Canon 60D||+||79/100||4/5||5/5||4.5/5||Aug 2010||1,399|
|Canon 7D||+ +||84/100||4.5/5||5/5||4.5/5||Sep 2009||1,699|
|Nikon D500||+ +||91/100||4.5/5||5/5||5/5||Jan 2016||1,999|
|Nikon D7100||+ +||85/100||4.5/5||5/5||4.5/5||Feb 2013||1,199|
|Sony RX10 II||+ +||82/100||4.5/5||4.5/5||4/5||Jun 2015||1,299|
|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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 250D vs Canon 7D II
- Canon 60D vs Canon 7D II
- Canon 7D II vs Canon SX50
- Canon 7D II vs Fujifilm X-S10
- Canon 7D II vs Fujifilm X30
- Canon G7 X Mark III vs Canon T6i
- Canon G7 X Mark III vs Fujifilm X-S10
- Canon G7 X Mark III vs Fujifilm X100
- Canon G7 X Mark III vs Leica V-LUX 4
- Canon G7 X Mark III vs Nikon D800E
- Canon G7 X Mark III vs Sony A7 III
- Canon G7 X Mark III vs Sony A7R II
Specifications: Canon 7D II vs Canon G7 X Mark 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 Model||Canon 7D II||Canon G7 X Mark III|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-100mm f/1.8-2.8|
|Launch Date||September 2014||July 2019|
|Launch Price||USD 1,799||USD 749|
|Sensor Specs||Canon 7D II||Canon G7 X Mark III|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||22.4 x 15.0 mm||13.2 x 8.8 mm|
|Sensor Area||336 mm2||116.16 mm2|
|Sensor Diagonal||27 mm||15.9 mm|
|Sensor Resolution||20 Megapixels||20 Megapixels|
|Image Resolution||5472 x 3648 pixels||5472 x 3648 pixels|
|Pixel Pitch||4.10 μm||2.41 μm|
|Pixel Density||5.94 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||4K/30p Video|
|ISO Setting||100 - 16,000 ISO||125 - 12,800 ISO|
|ISO Boost||100 - 51,200 ISO||125 - 25,600 ISO|
|Image Processor||DIGIC 6 (Dual)||DIGIC 8|
|DXO Sensor Quality (score)||70||..|
|DXO Color Depth (bits)||22.4||..|
|DXO Dynamic Range (EV)||11.8||..|
|DXO Low Light (ISO)||1082||..|
|Screen Specs||Canon 7D II||Canon G7 X Mark III|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||100%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Canon 7D II||Canon G7 X Mark III|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/2000s|
|Continuous Shooting||10 shutter flaps/s||30 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/25600s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||CF or SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon 7D II||Canon G7 X Mark III|
|External Flash||Hotshoe||no Hotshoe|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 3.0||USB 3.1|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Geotagging||GPS built-in||no internal GPS|
|Body Specs||Canon 7D II||Canon G7 X Mark III|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||670 shots per charge||235 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
149 x 112 x 78 mm
(5.9 x 4.4 x 3.1 in)
105 x 61 x 41 mm
(4.1 x 2.4 x 1.6 in)
|Camera Weight||910 g (32.1 oz)||304 g (10.7 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.