Canon G5 X Mark II vs Pentax K-S1
The Canon PowerShot G5 X Mark II and the Pentax K-S1 are two digital cameras that were officially introduced, respectively, in July 2019 and August 2014. The G5X Mark II is a fixed lens compact, while the K-S1 is a DSLR. The cameras are based on an one-inch (G5X Mark II) and an APS-C (K-S1) 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G5 X Mark II and the Pentax K-S1? 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 physical size and weight of the Canon G5 X Mark II and the Pentax K-S1 are illustrated in the side-by-side display below. 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-S1 can be obtained in four different colors (black, grey, orange, white), while the G5X 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 Pentax K-S1 is considerably larger (66 percent) than the Canon G5 X Mark II. In this context, it is worth noting that neither the G5X Mark II nor the K-S1 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G5X Mark II has a lens built in, whereas the K-S1 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 G5X Mark II gets 230 shots out of its NB-13L battery, while the K-S1 can take 410 images on a single charge of its D-LI109 power pack. The power pack in the G5X Mark II can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon G5 X Mark II||4.4 in||2.4 in||1.8 in||12.0 oz||230||n||Jul 2019||899|
|2.||Pentax K-S1||4.8 in||3.7 in||2.8 in||19.7 oz||410||n||Aug 2014||749|
|3.||Canon G7 X Mark III||4.1 in||2.4 in||1.6 in||10.7 oz||235||n||Jul 2019||749|
|4.||Canon M50||4.6 in||3.5 in||2.3 in||13.8 oz||235||n||Feb 2018||779|
|5.||Canon SX740||4.3 in||2.5 in||1.6 in||10.5 oz||265||n||Jul 2018||399|
|6.||Canon G7 X Mark II||4.2 in||2.4 in||1.7 in||11.3 oz||265||n||Feb 2016||699|
|7.||Canon G5 X||4.4 in||3.0 in||1.7 in||12.5 oz||210||n||Oct 2015||799|
|8.||Leica C-LUX||4.4 in||2.6 in||1.8 in||12.0 oz||370||n||Jun 2018||1,049|
|9.||Nikon D5300||4.9 in||3.9 in||3.0 in||16.9 oz||600||n||Oct 2013||799|
|10.||Panasonic LX100 II||4.5 in||2.6 in||2.6 in||13.8 oz||300||n||Aug 2018||999|
|11.||Panasonic ZS200||4.4 in||2.6 in||1.8 in||12.0 oz||370||n||Feb 2018||799|
|12.||Pentax K-S2||4.8 in||3.6 in||2.9 in||23.9 oz||410||Y||Feb 2015||749|
|13.||Pentax K-500||5.1 in||3.8 in||2.8 in||22.8 oz||710||n||Jun 2013||549|
|14.||Pentax K-3||5.2 in||3.9 in||3.0 in||28.2 oz||560||Y||Oct 2013||1,299|
|15.||Sony ZV-1||4.1 in||2.4 in||1.7 in||10.4 oz||260||n||May 2020||799|
|16.||Sony RX100 VI||4.0 in||2.3 in||1.7 in||10.6 oz||240||n||Jun 2018||1,199|
|17.||Sony A68||5.6 in||4.1 in||3.2 in||21.5 oz||540||n||Nov 2015||699|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. 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.
The size of the imaging sensor is a crucial determinant 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. 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon G5 X Mark II features an one-inch sensor and the Pentax K-S1 an APS-C sensor. The sensor area in the K-S1 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.
Even though the K-S1 has a larger sensor, both cameras offer the same resolution of 20 megapixels. This implies that the K-S1 has a lower pixel density and larger individual pixels (with a pixel pitch of 4.28μm versus 2.41μm for the G5X Mark II), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the G5X Mark II is much more recent (by 4 years and 10 months) than the K-S1, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the K-S1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The Canon PowerShot G5 X Mark II has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 125-25600. The corresponding ISO settings for the Pentax K-S1 are ISO 100 to ISO 51200 (no boost).
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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
|1.||Canon G5 X Mark II||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|3.||Canon G7 X Mark III||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|6.||Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|7.||Canon G5 X||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|10.||Panasonic LX100 II||Four Thirds||16.8||4736||3552||4K/30p||..||..||..||..|
|16.||Sony RX100 VI||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the G5X Mark II provides a higher video resolution than the K-S1. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G5X Mark II has an electronic viewfinder (2360k dots), while the K-S1 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The table below summarizes some of the other core capabilities of the Canon G5 X Mark II and Pentax K-S1 in connection with corresponding information for a sample of similar cameras.
|1.||Canon G5 X Mark II||2360||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|3.||Canon G7 X Mark III||none||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|6.||Canon G7 X Mark II||none||n||3.0||1040||tilting||Y||1/2000s||8.0||Y||Y|
|7.||Canon G5 X||2360||n||3.0||1040||swivel||Y||1/2000s||5.9||Y||Y|
|10.||Panasonic LX100 II||2764||n||3.0||1240||fixed||Y||1/4000s||11.0||n||Y|
|16.||Sony RX100 VI||2359||n||3.0||1229||tilting||Y||1/2000s||24.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G5X Mark II has a touchscreen, while the K-S1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The G5X Mark II 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-S1 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 G5X Mark 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 G5 X Mark II has 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 G5X Mark II and the K-S1 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.
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 G5 X Mark II and Pentax K-S1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon G5 X Mark II||-||stereo||mono||-||-||micro||3.1||Y||-||Y|
|3.||Canon G7 X Mark III||-||stereo||mono||Y||-||micro||3.1||Y||-||Y|
|6.||Canon G7 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|7.||Canon G5 X||Y||stereo||mono||-||-||mini||2.0||Y||Y||-|
|10.||Panasonic LX100 II||Y||stereo||mono||-||-||micro||2.0||Y||-||Y|
|16.||Sony RX100 VI||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
It is notable that the G5X Mark II offers wifi support, while the K-S1 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The G5X Mark II is a recent model that features in the current product line-up of Canon. In contrast, the K-S1 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the K-S1 was succeeded by the Pentax K-S2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.
So how do things add up? Is the Canon G5 X Mark II better than the Pentax K-S1 or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Canon PowerShot G5 X Mark II:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- More framing info: Has an electronic viewfinder that displays shooting data.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- 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.
- Faster burst: Shoots at higher frequency (30 vs 5.4 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with a built-in lens, while the K-S1 requires a separate lens.
- More compact: Is smaller (111x61mm vs 121x93mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the K-S1).
- Easier travel charging: Can be conveniently charged via its USB port.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- 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 modern: Reflects 4 years and 10 months of technical progress since the K-S1 launch.
Advantages of the Pentax K-S1:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/2000s) to freeze action.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (410 versus 230) out of a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been around for much longer (launched in August 2014).
If the number of relative strengths (bullet points above) is taken as a guide, the G5X Mark II is the clear winner of the match-up (18 : 7 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.
How about other alternatives? Do the specifications of the Canon G5 X Mark II and the Pentax K-S1 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 incomplete and does no justice, for example, to the way the G5X Mark II or the K-S1 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 expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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.
|1.||Canon G5 X Mark II||4/5||+||82/100||..||4/5||Jul 2019||899|
|2.||Pentax K-S1||4/5||..||..||4.5/5||4/5||Aug 2014||749|
|3.||Canon G7 X Mark III||..||+ +||81/100||4/5||..||Jul 2019||749|
|4.||Canon M50||..||+||79/100||..||3.5/5||Feb 2018||779|
|5.||Canon SX740||..||+||..||4/5||4/5||Jul 2018||399|
|6.||Canon G7 X Mark II||4.5/5||+ +||81/100||4.5/5||4.5/5||Feb 2016||699|
|7.||Canon G5 X||5/5||+ +||78/100||4.5/5||4.5/5||Oct 2015||799|
|8.||Leica C-LUX||..||..||..||4.5/5||4/5||Jun 2018||1,049|
|9.||Nikon D5300||4/5||+ +||79/100||4.5/5||4.5/5||Oct 2013||799|
|10.||Panasonic LX100 II||4.5/5||+||82/100||4.5/5||4.5/5||Aug 2018||999|
|11.||Panasonic ZS200||..||+ +||81/100||4.5/5||4.5/5||Feb 2018||799|
|12.||Pentax K-S2||4.5/5||..||..||5/5||4.5/5||Feb 2015||749|
|13.||Pentax K-500||..||..||..||4.5/5||4.5/5||Jun 2013||549|
|14.||Pentax K-3||4/5||..||83/100||5/5||5/5||Oct 2013||1,299|
|15.||Sony ZV-1||4/5||..||85/100||4/5||4.5/5||May 2020||799|
|16.||Sony RX100 VI||4.5/5||+ +||83/100||4/5||4.5/5||Jun 2018||1,199|
|17.||Sony A68||3/5||..||..||4/5||4/5||Nov 2015||699|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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. 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 G5 X Mark II vs Pentax K-S1
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 G5 X Mark II||Pentax K-S1|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||24-120mm f/1.8-2.8||Pentax K mount lenses|
|Launch Date||July 2019||August 2014|
|Launch Price||USD 899||USD 749|
|Sensor Specs||Canon G5 X Mark II||Pentax K-S1|
|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|
|Sensor Resolution||20 Megapixels||20 Megapixels|
|Image Resolution||5472 x 3648 pixels||5472 x 3648 pixels|
|Pixel Pitch||2.41 μm||4.28 μm|
|Pixel Density||17.18 MP/cm2||5.45 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||4K/30p Video||1080/30p Video|
|ISO Setting||125 - 12,800 ISO||100 - 51,200 ISO|
|ISO Boost||125 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 8||PRIME MII|
|DXO Sensor Quality (score)||..||78|
|DXO Color Depth (bits)||..||23.5|
|DXO Dynamic Range (EV)||..||13.0|
|DXO Low Light (ISO)||..||1061|
|Screen Specs||Canon G5 X Mark II||Pentax K-S1|
|Viewfinder Type||Electronic viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||921k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G5 X Mark II||Pentax K-S1|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/6000s|
|Continuous Shooting||30 shutter flaps/s||5.4 shutter flaps/s|
|Electronic Shutter||up to 1/25600s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||Lens-based stabilization||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon G5 X Mark II||Pentax K-S1|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 3.1||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Wifi Support||Wifi built-in||no Wifi|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon G5 X Mark II||Pentax K-S1|
|Battery Life (CIPA)||230 shots per charge||410 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
111 x 61 x 46 mm
(4.4 x 2.4 x 1.8 in)
121 x 93 x 70 mm
(4.8 x 3.7 x 2.8 in)
|Camera Weight||340 g (12.0 oz)||558 g (19.7 oz)|
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