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Canon G3 X versus Canon G7 X Mark II

The Canon PowerShot G3 X and the Canon PowerShot G7 X Mark II are two digital cameras that were officially introduced, respectively, in June 2015 and February 2016. Both the G3X and the G7X Mark II are fixed lens compact cameras that are equipped with an one-inch sensor. Both cameras offer a resolution of 20 megapixel. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon G3 X vs Canon G7 X Mark II

The physical size and weight of the Canon G3 X and the Canon G7 X Mark II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter. You can also toggle the display 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 G3X – represents the basis or 100 percent across all the size and weight measures).

Compare Canon G3 X vs Canon G7 X Mark II
Compare G3X versus G7X Mark II top
Compare G3X and G7X Mark II rear

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 (32 percent) than the Canon G3 X. Moreover, the G7X Mark II is substantially lighter (56 percent) than the G3X. It is worth mentioning in this context that the G3X is splash and dust resistant, while the G7X Mark II does not feature any corresponding weather-sealing.

Concerning battery life, the G3X gets 300 shots out of its NB-10L battery, while the G7X Mark II can take 265 images on a single charge of its NB-13L power pack.

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.

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 G3 X» 4.8 in 3.0 in 4.1 in 25.9 oz 300 Y Jun 2015 999 i i Canon G3 X
Canon G7 X Mark II« 4.2 in 2.4 in 1.7 in 11.3 oz 265 n Feb 2016 699 i i Canon G7 X Mark II
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i Canon 80D
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i Canon G5 X
Canon G9 X« » 3.9 in 2.3 in 1.2 in 7.4 oz 220 n Oct 2015 529- i Canon G9 X
Canon M3« » 4.4 in 2.7 in 1.7 in 12.9 oz 250 n Feb 2015 679- i Canon M3
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i Canon G7 X
Canon 70D« » 5.5 in 4.1 in 3.1 in 26.6 oz 920 Y Jul 2013 1,199- i Canon 70D
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i Sony RX100 V
Sony RX10 II« » 5.1 in 3.5 in 4.0 in 28.7 oz 400 Y Jun 2015 1,299- i Sony RX10 II
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i Sony RX100 IV
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i Sony RX10

Any camera purchase will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X Mark II was launched at a markedly lower price (by 30 percent) than the G3X, which puts it into a different market segment. 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.

 

Sensor comparison: Canon G3 X vs Canon G7 X Mark II

The size of the imaging sensor is a crucial determinant 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. 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.

Both cameras under consideration feature an one-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 2.7. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the G7X Mark II uses a more advanced image processing engine (DIGIC 7) than the G3X (DIGIC 6), with benefits for noise reduction, color accuracy, and processing speed.

Canon G3 X and Canon G7 X Mark II sensor measures

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 20 megapixel. This similarity in sensor specs implies that both the G3X and the G7X Mark II have the same pixel density, as well as the same pixel size. It should, however, be noted that the G7X Mark II is a somewhat more recent model (by 8 months) than the G3X, and its sensor might have benefitted from technological advances during this time.

G3X versus G7X Mark II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Canon G3 X» 1-inch 20.0 5472 36481080/60p21.412.352163Canon G3 X
Canon G7 X Mark II« 1-inch 20.0 5472 36481080/60p----Canon G7 X Mark II
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----Canon G5 X
Canon G9 X« » 1-inch 20.0 5472 36481080/60p21.512.349563Canon G9 X
Canon M3« » APS-C 24.0 6000 40001080/30p22.811.8116972Canon M3
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671Canon G7 X
Canon 70D« » APS-C 20.0 5472 36481080/30p22.511.692668Canon 70D
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670Sony RX100 V
Sony RX10 II« » 1-inch 20.0 5472 36484K/30p23.012.653170Sony RX10 II
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469Sony RX10

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, and both provide the same movie specifications (1080/60p).

 

Feature comparison: Canon G3 X vs Canon G7 X Mark II

Apart from body and sensor, cameras can and do differ across a variety of features. The G3X and the G7X Mark II are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. That said, the G3X can be equipped with an optional viewfinder – the EVF-DC1. The adjacent table lists some of the other core features of the Canon G3 X and Canon G7 X Mark II along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon G3 X»- n 3.2 1620 tilting Y 2000 5.9 Y Y Canon G3 X
Canon G7 X Mark II«- n 3.0 1040 tilting Y 2000 8.0 Y Y Canon G7 X Mark II
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 80D
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y Canon G5 X
Canon G9 X« »- n 3.0 1040 fixed Y 2000 6.0 Y Y Canon G9 X
Canon M3« »- n 3.0 1040 tilting Y 4000 4.2 Y n Canon M3
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y Canon G7 X
Canon 70D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 70D
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III
Sony RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y Sony RX100 V
Sony RX10 II« »2359 Y 3.0 1229 tilting n 3200 14.0 Y Y Sony RX10 II
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony RX10« »1440 Y 3.0 1229 tilting n 3200 10.0 Y Y Sony RX10

Both the G3X and the G7X Mark II have zoom lenses build in. The G3X has a 24-600mm f/2.8-5.6 optic and the G7X Mark II offers a 24-100mm f/1.8-2.8 (focal lengths in full frame equivalent terms). Hence, the G3X and G7X Mark II provide the same view at the wide-angle end, but the G7X Mark II has less tele-photo reach at the long end. The G7X Mark II offers the faster maximum aperture.

Both the G3X and the G7X Mark II write their imaging data to SDXC cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Canon G3 X»YstereomonoYYmini2.0YY-Canon G3 X
Canon G7 X Mark II«-stereomono--micro2.0YY-Canon G7 X Mark II
Canon 80D« »YstereomonoYYmini2.0YY-Canon 80D
Canon G5 X« »YstereomonoYYmini2.0YY-Canon G5 X
Canon G9 X« »-stereomono--micro2.0YY-Canon G9 X
Canon M3« »YstereomonoY-mini2.0YY-Canon M3
Canon G7 X« »-stereomono--micro2.0YY-Canon G7 X
Canon 70D« »YstereomonoY-mini2.0Y--Canon 70D
Panasonic FZ1000« »YstereomonoY-micro2.0YY-Panasonic FZ1000
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
Sony RX100 V« »-stereomono--micro2.0YY-Sony RX100 V
Sony RX10 II« »YstereomonoYYmicro2.0YY-Sony RX10 II
Sony RX100 IV« »-stereomono--micro2.0YY-Sony RX100 IV
Sony RX10« »YstereomonoYYmicro2.0YY-Sony RX10

Both the G3X 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 G3X does not have a direct predecessor.

Review summary: Canon G3 X vs Canon G7 X Mark II

So how do things add up? Is there a clear favorite between the Canon G3 X and the Canon G7 X Mark II? A synthesis of the relative strong points of each of the models is listed below.


Arguments in favor of the Canon PowerShot G3 X:

  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1620k vs 1040k dots).
  • More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
  • Longer lasting: Can take more shots (300 versus 265) 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.
  • More heavily discounted: Has been on the market for longer (launched in June 2015).


Advantages of the Canon PowerShot G7 X Mark II:

  • Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 6).
  • Faster burst: Shoots at higher frequency (8 vs 5.9 flaps/sec) to capture the decisive moment.
  • Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.8).
  • More compact: Is smaller (106x61mm vs 123x77mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 414g or 56 percent) and is thus easier to take along.
  • More affordable: Was introduced into a lower priced category (30 percent cheaper at launch).
  • More modern: Was introduced somewhat (8 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the G3X emerges as the winner of the contest (10 : 7 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.

G3X 10:07 G7X Mark II

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the G3X or the G7X Mark II handle or perform in practice. 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 why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon G3 X»Rec-4.5/53.5/54/5 Jun 2015 999 i i Canon G3 X
Canon G7 X Mark II«HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i Canon G7 X Mark II
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i Canon 80D
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i Canon G5 X
Canon G9 X« »HiRec-4.5/54/54.5/5 Oct 2015 529- i Canon G9 X
Canon M3« »rev75/1004.5/54.5/54/5 Feb 2015 679- i Canon M3
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i Canon G7 X
Canon 70D« »HiRec83/1004.5/54.5/55/5 Jul 2013 1,199- i Canon 70D
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i Sony RX100 V
Sony RX10 II« »HiRec82/1004.5/54.5/54/5 Jun 2015 1,299- i Sony RX10 II
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony RX10« »Rec80/1004.5/54.5/54.5/5 Oct 2013 1,299- i Sony RX10

The above review scores should be interpreted with care, 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 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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If the camera you are interested in is not available, please send me an email, and I will try to update the database with the necessary infos.

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