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Canon G7 X vs Pentax K-3

The Canon PowerShot G7 X and the Pentax K-3 are two digital cameras that were officially introduced, respectively, in September 2014 and October 2013. The G7X is a fixed lens compact, while the K-3 is a DSLR. The cameras are based on an one-inch (G7X) and an APS-C (K-3) sensor. The Canon has a resolution of 20 megapixels, whereas the Pentax provides 24.1 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
versus
Pentax K-3
Canon G7 X   Pentax K-3
Fixed lens compact camera Digital single lens reflex
24-100mm f/1.8-2.8 Pentax K mount lenses
20 MP – 1" sensor 24.1 MP – APS-C sensor
1080/60p Video 1080/60i Video
ISO 125-12,800 ISO 100-51,200
No viewfinder, LCD framing Optical viewfinder
3.0" LCD – 1040k dots 3.2" LCD – 1037k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
6.5 shutter flaps per second 8.3 shutter flaps per second
Lens-based stabilizationIn-body stabilization
not weather sealedWeathersealed body
210 shots per battery charge560 shots per battery charge
103 x 60 x 40 mm, 304 g 131 x 100 x 77 mm, 800 g
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Check G7X offers at
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Check K-3 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 X and the Pentax K-3? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon G7 X and the Pentax K-3. 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.

The K-3 can be obtained in two different colors (black, silver), while the G7X is only available in black.

Size Canon G7 X vs Pentax K-3
Compare G7X versus K-3 top
Comparison G7X or K-3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 is considerably larger (112 percent) than the Canon G7 X. It is noteworthy in this context that the K-3 is splash and dust-proof, while the G7X does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X has a lens built in, whereas the K-3 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

Concerning battery life, the G7X gets 210 shots out of its Canon NB-13L battery, while the K-3 can take 560 images on a single charge of its Pentax D-LI90 power pack.

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.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 699ebay.com
2.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
3.
 
Canon G7 X Mark III 105 mm 61 mm 41 mm 304 g 235 n Jul 2019 749 amazon.com
4.
 
Canon G7 X Mark II 106 mm 61 mm 42 mm 319 g 265 n Feb 2016 699ebay.com
5.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 799ebay.com
6.
 
Canon G9 X 98 mm 58 mm 31 mm 209 g 220 n Oct 2015 529ebay.com
7.
 
Canon M3 111 mm 68 mm 44 mm 366 g 250 n Feb 2015 679ebay.com
8.
 
Canon M10 108 mm 67 mm 35 mm 301 g 255 n Oct 2015 499ebay.com
9.
 
Canon T6i 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749ebay.com
10.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
11.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099ebay.com
12.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
13.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 1,099ebay.com
14.
 
Sony RX100 IV 102 mm 58 mm 41 mm 298 g 280 n Jun 2015 999ebay.com
15.
 
Sony RX100 III 102 mm 58 mm 41 mm 290 g 320 n May 2014 799ebay.com
16.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 749ebay.com
17.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. 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 was launched at a lower price than the K-3, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon G7 X features an one-inch sensor and the Pentax K-3 an APS-C sensor. The sensor area in the K-3 is 216 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon G7 X and Pentax K-3 sensor measures

With 24.1MP, the K-3 offers a higher resolution than the G7X (20MP), but the K-3 nevertheless has larger individual pixels (pixel pitch of 3.90μm versus 2.41μm for the G7X) due to its larger sensor. However, the G7X is a somewhat more recent model (by 11 months) than the K-3, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the K-3 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Canon G7 X are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 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 Pentax K-3 are ISO 100 to ISO 51200 (no boost).

In terms of underlying technology, the G7X is build around a BSI-CMOS sensor, while the K-3 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.

G7X versus K-3 MP

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. Of the two cameras under consideration, the K-3 has a markedly higher DXO score than the G7X (overall score 9 points higher), which will translate into better image quality. The advantage is based on 0.7 bits higher color depth, 0.7 EV in additional dynamic range, and 1.1 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
2.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
3.
 
Canon G7 X Mark III 1-inch 20.0 5472 36484K/30p22.212.458365
4.
 
Canon G7 X Mark II 1-inch 20.0 5472 36481080/60p21.811.926062
5.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p21.412.347162
6.
 
Canon G9 X 1-inch 20.0 5472 36481080/60p21.512.349563
7.
 
Canon M3 APS-C 24.0 6000 40001080/30p22.811.8116972
8.
 
Canon M10 APS-C 17.9 5184 34561080/30p22.211.475365
9.
 
Canon T6i APS-C 24.0 6000 40001080/30p22.712.091971
10.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
11.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
12.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
13.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
14.
 
Sony RX100 IV 1-inch 20.0 5472 36484K/30p22.812.659170
15.
 
Sony RX100 III 1-inch 20.0 5472 36481080/60p22.412.349567
16.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367
17.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
Note: DXO values in italics represent estimates based on sensor size and age.
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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 G7X provides a higher frame rate than the K-3. It can shoot video footage at 1080/60p, while the Pentax is limited to 1080/60i.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the K-3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Canon G7 X and Pentax K-3 along with similar information for a selection of comparators.

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Core Features
# image 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 Xnone n3.0 / 1040 tilting Y 1/2000s 6.5/s Y Y
2.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
3.
 
Canon G7 X Mark IIInone n3.0 / 1040 tilting Y 1/2000s 30/s Y Y
4.
 
Canon G7 X Mark IInone n3.0 / 1040 tilting Y 1/2000s 8.0/s Y Y
5.
 
Canon G5 X2360 n3.0 / 1040 swivel Y 1/2000s 5.9/s Y Y
6.
 
Canon G9 Xnone n3.0 / 1040 fixed Y 1/2000s 6.0/s Y Y
7.
 
Canon M3optional n3.0 / 1040 tilting Y 1/4000s 4.2/s Y n
8.
 
Canon M10none n3.0 / 1040 tilting Y 1/4000s 4.6/s Y n
9.
 
Canon T6ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
11.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
12.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
13.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
14.
 
Sony RX100 IV2359 n3.0 / 1228 tilting n 1/2000s 16.0/s Y Y
15.
 
Sony RX100 III1440 n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
16.
 
Sony RX100 IIoptional n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
17.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G7X has a touchscreen, while the K-3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The G7X 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 K-3 does not have a selfie-screen.

The Canon G7 X and the Pentax K-3 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 K-3 write their files to SDXC cards. The K-3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the G7X 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.

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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 Pentax K-3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image 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-stereo / mono--micro2.0YY-
2.
 
Pentax K-3Ymono / monoYYmini3.0---
3.
 
Canon G7 X Mark III-stereo / monoY-micro3.1Y-Y
4.
 
Canon G7 X Mark II-stereo / mono--micro2.0YY-
5.
 
Canon G5 XYstereo / mono--mini2.0YY-
6.
 
Canon G9 X-stereo / mono--micro2.0YY-
7.
 
Canon M3Ystereo / monoY-mini2.0YY-
8.
 
Canon M10-stereo / mono--mini2.0YY-
9.
 
Canon T6iYstereo / monoY-mini2.0YY-
10.
 
Nikon D7100Ystereo / monoYYmini2.0---
11.
 
Pentax KPYstereo / monoY--2.0Y--
12.
 
Pentax K-3 IIYmono / monoYYmini3.0---
13.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
14.
 
Sony RX100 IV-stereo / mono--micro2.0YY-
15.
 
Sony RX100 III-stereo / mono--micro2.0YY-
16.
 
Sony RX100 IIYstereo / mono--micro2.0YY-
17.
 
Sony A77Ystereo / monoY-mini2.0---
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It is notable that the G7X offers wifi support, while the K-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Pentax K-3 (unlike the G7X) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the G7X and the K-3 have been discontinued, but can regularly be found used on ebay. The K-3 was replaced by the Pentax K-3 II, while the G7X was followed by the Canon G7 X Mark II. Further information on the features and operation of the G7X and K-3 can be found, respectively, in the Canon G7 X Manual (free pdf) or the online Pentax K-3 Manual.

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Review summary

So how do things add up? Which of the two cameras – the Canon G7 X or the Pentax K-3 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Canon PowerShot G7 X:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Ready to shoot: Comes with a built-in lens, while the K-3 requires a separate lens.
  • More compact: Is smaller (103x60mm vs 131x100mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the K-3).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Is somewhat more recent (announced 11 months after the K-3).

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Advantages of the Pentax K-3:

  • More detail: Has more megapixels (24.1 vs 20MP), which boosts linear resolution by 10%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.1 stops ISO advantage).
  • 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.
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • Faster burst: Shoots at higher frequency (8.3 vs 6.5 flaps/sec) to capture the decisive moment.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (560 versus 210) 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.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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 on the market for longer (launched in October 2013).

If the number of relative strengths (bullet points above) is taken as a guide, the K-3 is the clear winner of the contest (20 : 12 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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.

G7X 12:20 K-3

How about other alternatives? Do the specifications of the Canon G7 X and the Pentax K-3 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G7X or the K-3. 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.

Expert reviews

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon G7 X4/5+ +..77/1004.5/54.5/5 Sep 2014 699ebay.com
2.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
3.
 
Canon G7 X Mark III..+ +4/581/1004/5.. Jul 2019 749 amazon.com
4.
 
Canon G7 X Mark II4.5/5+ +..81/1004.5/54.5/5 Feb 2016 699ebay.com
5.
 
Canon G5 X5/5+ +..78/1004.5/54.5/5 Oct 2015 799ebay.com
6.
 
Canon G9 X3.5/5+ +....4.5/54.5/5 Oct 2015 529ebay.com
7.
 
Canon M34/5o..75/1004.5/54/5 Feb 2015 679ebay.com
8.
 
Canon M10..........4/5 Oct 2015 499ebay.com
9.
 
Canon T6i5/5....75/1004.5/54.5/5 Feb 2015 749ebay.com
10.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
11.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099ebay.com
12.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
13.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 1,099ebay.com
14.
 
Sony RX100 IV4.5/5+ +..85/1004/54.5/5 Jun 2015 999ebay.com
15.
 
Sony RX100 III5/5+ +..82/1004.5/55/5 May 2014 799ebay.com
16.
 
Sony RX100 II5/5+ +..79/1004.5/54.5/5 Jun 2013 749ebay.com
17.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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. Thus, a score needs to be put into the context of the launch date and the launch price 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, 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 would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon G7 X vs Pentax K-3

    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 Specifications
    Camera Model Canon G7 X Pentax K-3
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 24-100mm f/1.8-2.8 Pentax K mount lenses
    Launch Date September 2014 October 2013
    Launch Price USD 699 USD 1,299
    Sensor Specs Canon G7 X Pentax K-3
    Sensor Technology BSI-CMOS CMOS
    Sensor Format 1" Sensor APS-C Sensor
    Sensor Size 13.2 x 8.8 mm 23.5 x 15.6 mm
    Sensor Area 116.16 mm2 366.6 mm2
    Sensor Diagonal 15.9 mm 28.2 mm
    Crop Factor 2.7x 1.5x
    Sensor Resolution 20 Megapixels 24.1 Megapixels
    Image Resolution 5472 x 3648 pixels 6016 x 4000 pixels
    Pixel Pitch 2.41 μm 3.90 μm
    Pixel Density 17.18 MP/cm2 6.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60p Video 1080/60i Video
    ISO Setting 125 - 12,800 ISO 100 - 51,200 ISO
    Image Processor DIGIC 6 PRIME III
    DXO Sensor Quality (score) 71 80
    DXO Color Depth (bits) 23.0 23.7
    DXO Dynamic Range (EV) 12.7 13.4
    DXO Low Light (ISO) 556 1216
    Screen Specs Canon G7 X Pentax K-3
    Viewfinder Type no viewfinder Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.63x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon G7 X Pentax K-3
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/8000s
    Continuous Shooting 6.5 shutter flaps/s 8.3 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens-based stabilizationIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I UHS-I
    Connectivity Specs Canon G7 X Pentax K-3
    External Flash no Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Body Specs Canon G7 X Pentax K-3
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon NB-13L Pentax D-LI90
    Battery Life (CIPA)210 shots per charge560 shots per charge
    Body Dimensions 103 x 60 x 40 mm
    (4.1 x 2.4 x 1.6 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 304 g (10.7 oz) 800 g (28.2 oz)
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