Canon G1 X vs Pentax K-70
The Canon PowerShot G1 X and the Pentax K-70 are two digital cameras that were announced, respectively, in January 2012 and June 2016. The G1X is a fixed lens compact, while the K-70 is a DSLR. The cameras are based on an 1.5-inch (G1X) and an APS-C (K-70) sensor. The Canon has a resolution of 14.2 megapixels, whereas the Pentax provides 24 MP.
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 G1 X and the Pentax K-70? 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 G1 X and the Pentax K-70 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.
The K-70 can be obtained in two different colors (black, silver), while the G1X 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-70 is notably larger (24 percent) than the Canon G1 X. It is noteworthy in this context that the K-70 is splash and dust-proof, while the G1X does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X has a lens built in, whereas the K-70 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
|1.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799|
|2.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649|
|3.||Canon G1 X Mark II||116 mm||74 mm||66 mm||553 g||240||n||Feb 2014||799|
|4.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|5.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|6.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|7.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|8.||Canon 1100D||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|9.||Canon 500D||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|10.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|11.||Leica V-LUX 4||125 mm||87 mm||110 mm||588 g||540||n||Sep 2012||949|
|12.||Leica V-LUX 3||124 mm||81 mm||95 mm||540 g||410||n||Dec 2011||949|
|13.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099|
|14.||Pentax K-S2||123 mm||91 mm||73 mm||678 g||410||Y||Feb 2015||749|
|15.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099|
|16.||Pentax K-50||130 mm||97 mm||71 mm||650 g||410||Y||Jun 2013||599|
|17.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. 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.
The size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G1 X features an 1.5-inch sensor and the Pentax K-70 an APS-C sensor. The sensor area in the K-70 is 40 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.85 and 1.5. The sensor in the G1X has a native 4:3 aspect ratio, while the one in the K-70 offers a 3:2 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 24MP, the K-70 offers a higher resolution than the G1X (14.2MP), but the K-70 has smaller individual pixels (pixel pitch of 3.91μm versus 4.30μm for the G1X). Yet, the K-70 is a much more recent model (by 4 years and 4 months) than the G1X, and its sensor will 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-70 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax K-70 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-70 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon G1 X are 21.8 x 16.3 inches or 55.3 x 41.5 cm for good quality, 17.4 x 13.1 inches or 44.2 x 33.2 cm for very good quality, and 14.5 x 10.9 inches or 36.8 x 27.6 cm for excellent quality prints.
The K-70 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the G1X, the K-70 has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Canon PowerShot G1 X has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Pentax K-70 are ISO 100 to ISO 102400 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. 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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|1.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|3.||Canon G1 X Mark II||1.5-inch||13.0||4160||3120||1080/30p||21.5||10.8||581||58|
|11.||Leica V-LUX 4||1/2.3||12.0||4000||3000||1080/60p||19.8||11.1||501||43|
|12.||Leica V-LUX 3||1/2.3||12.0||4000||3000||1080/60p||19.7||11.0||430||42|
|15.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the K-70 provides a faster frame rate than the G1X. It can shoot movie footage at 1080/60i, while the Canon is limited to 1080/24p.
Apart from body and sensor, cameras can and do differ across a variety of features. The G1X and the K-70 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The adjacent table lists some of the other core features of the Canon G1 X and Pentax K-70 along with similar information for a selection of comparators.
|1.||Canon G1 X||optical||n||3.0 / 922||swivel||n||1/4000s||1.9||Y||Y|
|2.||Pentax K-70||optical||n||3.0 / 921||swivel||n||1/6000s||6.0||Y||Y|
|3.||Canon G1 X Mark II||optional||n||3.0 / 1040||tilting||Y||1/4000s||5.2||Y||Y|
|4.||Canon G16||optical||n||3.0 / 922||fixed||n||1/4000s||2.2||Y||Y|
|5.||Canon S120||none||n||3.0 / 922||fixed||Y||1/2000s||12.1||Y||Y|
|6.||Canon 650D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|7.||Canon SX50||202||n||3.0 / 461||swivel||n||1/2000s||2.2||Y||Y|
|8.||Canon 1100D||optical||n||2.7 / 230||fixed||n||1/4000s||3.0||Y||n|
|9.||Canon 500D||optical||n||3.0 / 920||fixed||n||1/4000s||3.4||Y||n|
|10.||Canon 450D||optical||n||3.0 / 230||fixed||n||1/4000s||3.5||Y||n|
|11.||Leica V-LUX 4||1312||n||3.0 / 460||swivel||n||1/4000s||12.0||Y||Y|
|12.||Leica V-LUX 3||202||n||3.0 / 460||swivel||n||1/2000s||12.0||Y||Y|
|13.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0||Y||Y|
|14.||Pentax K-S2||optical||n||3.0 / 921||swivel||n||1/6000s||5.4||Y||Y|
|15.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||n||Y|
|16.||Pentax K-50||optical||n||3.0 / 921||fixed||n||1/6000s||6.0||Y||Y|
|17.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||Y||Y|
The Pentax K-70 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 G1X and the K-70 write their files to SDXC cards. The K-70 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the G1X cannot take advantage of Ultra High Speed SD cards.
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 G1 X and Pentax K-70 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G1 X||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Pentax K-70||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|3.||Canon G1 X Mark II||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon G16||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|5.||Canon S120||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|6.||Canon 650D||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|7.||Canon SX50||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|8.||Canon 1100D||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|9.||Canon 500D||Y||mono / mono||-||-||mini||2.0||-||-||-|
|10.||Canon 450D||Y||- / -||-||-||mini||2.0||-||-||-|
|11.||Leica V-LUX 4||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|12.||Leica V-LUX 3||Y||stereo / -||-||-||mini||2.0||-||-||-|
|13.||Pentax KP||Y||stereo / mono||Y||-||-||2.0||Y||-||-|
|14.||Pentax K-S2||Y||mono / mono||Y||-||micro||2.0||Y||Y||-|
|15.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|16.||Pentax K-50||Y||mono / mono||-||-||micro||2.0||-||-||-|
|17.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
It is notable that the K-70 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the G1X does not provide wifi capability.
The K-70 is a recent model that features in the current product line-up of Pentax. In contrast, the G1X has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the G1X was succeeded by the Canon G1X 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 and Pentax websites.
So what conclusions can be drawn? Is there a clear favorite between the Canon G1 X and the Pentax K-70? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon PowerShot G1 X:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Ready to shoot: Comes with a built-in lens, while the K-70 requires a separate lens.
- More compact: Is smaller (117x81mm vs 126x93mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the K-70).
- More heavily discounted: Has been available for much longer (launched in January 2012).
Advantages of the Pentax K-70:
- More detail: Has more megapixels (24 vs 14.2MP), which boosts linear resolution by 33%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher movie framerates (1080/60i versus 1080/24p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (6 vs 1.9 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (410 versus 250) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Reflects 4 years and 4 months of technical progress since the G1X launch.
If the number of relative strengths (bullet points above) is taken as a guide, the K-70 is the clear winner of the contest (19 : 5 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 G1 X and the Pentax K-70 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 says little about, for example, the shooting experience and imaging performance of the G1X and the K-70 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major 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.
|1.||Canon G1 X||5/5||+||..||76/100||4/5||4.5/5||Jan 2012||799|
|2.||Pentax K-70||4.5/5||..||..||79/100||4.5/5||4.5/5||Jun 2016||649|
|3.||Canon G1 X Mark II||3/5||+||..||77/100||4/5||4.5/5||Feb 2014||799|
|4.||Canon G16||4/5||+||..||..||4.5/5||4.5/5||Aug 2013||549|
|5.||Canon S120||..||+ +||..||..||4.5/5||4.5/5||Aug 2013||449|
|6.||Canon 650D||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|7.||Canon SX50||3/5||+ +||..||72/100||4.5/5||4.5/5||Sep 2012||429|
|8.||Canon 1100D||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449|
|9.||Canon 500D||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799|
|10.||Canon 450D||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|11.||Leica V-LUX 4||..||..||..||..||..||..||Sep 2012||949|
|12.||Leica V-LUX 3||..||..||..||..||..||..||Dec 2011||949|
|13.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099|
|14.||Pentax K-S2||4.5/5||..||..||..||5/5||4.5/5||Feb 2015||749|
|15.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099|
|16.||Pentax K-50||5/5||..||..||..||5/5||4.5/5||Jun 2013||599|
|17.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||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 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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 5D Mark IV vs Canon G1 X
- Canon 80D vs Canon G1 X
- Canon G1 X vs Nikon D4S
- Canon G1 X vs Olympus E-PM1
- Canon G1 X vs Olympus TG-4
- Canon G1 X vs Panasonic LX100 II
- Fujifilm X-A7 vs Pentax K-70
- Hasselblad X1D II vs Pentax K-70
- Kodak AZ901 vs Pentax K-70
- Leica M Typ 262 vs Pentax K-70
- Nikon L840 vs Pentax K-70
- Pentax K-70 vs Pentax KP
Specifications: Canon G1 X vs Pentax K-70
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 G1 X||Pentax K-70|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||28-112mm f/2.8-5.8||Pentax K mount lenses|
|Launch Date||January 2012||June 2016|
|Launch Price||USD 799||USD 649|
|Sensor Specs||Canon G1 X||Pentax K-70|
|Sensor Format||1.5" Sensor||APS-C Sensor|
|Sensor Size||18.7 x 14.0 mm||23.5 x 15.6 mm|
|Sensor Area||261.8 mm2||366.6 mm2|
|Sensor Diagonal||23.4 mm||28.2 mm|
|Sensor Resolution||14.2 Megapixels||24 Megapixels|
|Image Resolution||4352 x 3264 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.30 μm||3.91 μm|
|Pixel Density||5.43 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/24p Video||1080/60i Video|
|ISO Setting||100 - 12,800 ISO||100 - 102,400 ISO|
|Image Processor||DIGIC 5||PRIME MII|
|DXO Sensor Quality (score)||60||..|
|DXO Color Depth (bits)||21.7||..|
|DXO Dynamic Range (EV)||10.8||..|
|DXO Low Light (ISO)||644||..|
|Screen Specs||Canon G1 X||Pentax K-70|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||74%||100%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||922k dots||921k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Shooting Specs||Canon G1 X||Pentax K-70|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/6000s|
|Continuous Shooting||1.9 shutter flaps/s||6 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens-based stabilization||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon G1 X||Pentax K-70|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Canon G1 X||Pentax K-70|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||250 shots per charge||410 shots per charge|
117 x 81 x 65 mm
(4.6 x 3.2 x 2.6 in)
126 x 93 x 74 mm
(5.0 x 3.7 x 2.9 in)
|Camera Weight||534 g (18.8 oz)||688 g (24.3 oz)|
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