Canon G1 X Mark III vs SX70
The Canon PowerShot G1 X Mark III and the Canon PowerShot SX70 HS are two digital cameras that were announced, respectively, in October 2017 and September 2018. Both the G1X Mark III and the SX70 are fixed lens compact cameras that are based on an APS-C (G1X Mark III) and a 1/2.3-inch (SX70) sensor. The G1X Mark III has a resolution of 24 megapixels, whereas the SX70 provides 20.2 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 Mark III and the Canon PowerShot SX70 HS? 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 Mark III and the Canon SX70 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SX70 is notably larger (29 percent) than the Canon G1 X Mark III. Moreover, the SX70 is substantially heavier (52 percent) than the G1X Mark III. It is worth mentioning in this context that the G1X Mark III is splash and dust resistant, while the SX70 does not feature any corresponding weather-sealing.
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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon G1 X Mark III||115 mm||78 mm||51 mm||399 g||200||Y||Oct 2017||1,299|
|2.||Canon SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549|
|3.||Canon SX740||110 mm||64 mm||40 mm||299 g||265||n||Jul 2018||399|
|4.||Canon 6D Mark II||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999|
|5.||Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529|
|6.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|7.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199|
|8.||Canon SX540||120 mm||82 mm||92 mm||442 g||205||n||Jan 2016||399|
|9.||Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549|
|10.||Fujifilm X100V||128 mm||75 mm||53 mm||478 g||420||Y||Feb 2020||1,399|
|11.||Fujifilm X-T3||133 mm||93 mm||59 mm||539 g||390||Y||Sep 2018||1,499|
|12.||Fujifilm X100F||127 mm||75 mm||52 mm||469 g||390||n||Jan 2017||1,299|
|13.||Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|14.||Sony A6300||120 mm||67 mm||49 mm||404 g||400||Y||Feb 2016||999|
|15.||Sony A6500||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399|
|16.||Sony RX10 III||133 mm||94 mm||127 mm||1051 g||420||Y||Mar 2016||1,499|
|17.||Sony HX400V||130 mm||93 mm||103 mm||660 g||300||n||Feb 2014||499|
|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. The SX70 was launched at a markedly lower price (by 58 percent) than the G1X Mark III, 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. 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. 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 G1 X Mark III features an APS-C sensor and the Canon SX70 a 1/2.3-inch sensor. The sensor area in the SX70 is 92 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 5.6. The sensor in the G1X Mark III has a native 3:2 aspect ratio, while the one in the SX70 offers a 4:3 aspect.
Technology-wise, the SX70 uses a more advanced image processing engine (DIGIC 8) than the G1X Mark III (DIGIC 7), with benefits for noise reduction, color accuracy, and processing speed.
With 24MP, the G1X Mark III offers a higher resolution than the SX70 (20.2MP), but the G1X Mark III nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 1.18μm for the SX70) due to its larger sensor. However, the SX70 is a somewhat more recent model (by 11 months) than the G1X Mark III, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the SX70 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon G1 X Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1X Mark III 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 SX70 are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.
The G1X Mark III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Canon PowerShot SX70 HS are ISO 100 to ISO 3200 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. 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.
|1.||Canon G1 X Mark III||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|4.||Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85|
|5.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|16.||Sony RX10 III||1-inch||20.0||5472||3648||4K/30p||23.1||12.6||472||70|
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 SX70 provides a better video resolution than the G1X Mark III. It can shoot movie footage at 4K/30p, while the G1X Mark III is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. The G1X Mark III and the SX70 are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2360k dots. The adjacent table lists some of the other core features of the Canon G1 X Mark III and Canon SX70 along with similar information for a selection of comparators.
|1.||Canon G1 X Mark III||2360||n||3.0 / 1040||swivel||Y||1/2000s||9.0||Y||Y|
|2.||Canon SX70||2360||n||3.0 / 922||swivel||n||1/2000s||10.0||Y||Y|
|3.||Canon SX740||none||n||3.0 / 922||tilting||n||1/3200s||10.0||Y||Y|
|4.||Canon 6D Mark II||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.5||n||n|
|5.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2||Y||Y|
|6.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9||Y||Y|
|7.||Canon 80D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0||Y||n|
|8.||Canon SX540||none||n||3.0 / 461||fixed||n||1/2000s||5.9||Y||Y|
|9.||Canon SX60||922||n||3.0 / 922||swivel||n||1/2000s||6.4||Y||Y|
|10.||Fujifilm X100V||3690||n||3.0 / 1620||tilting||Y||1/4000s||11.0||Y||n|
|11.||Fujifilm X-T3||3690||n||3.0 / 1040||tilting||Y||1/8000s||11.0||n||n|
|12.||Fujifilm X100F||2360||n||3.0 / 1040||fixed||n||1/4000s||8.0||Y||n|
|13.||Nikon D7500||optical||Y||3.2 / 922||tilting||Y||1/8000s||8.0||Y||n|
|14.||Sony A6300||2359||n||3.0 / 922||tilting||n||1/4000s||11.0||Y||n|
|15.||Sony A6500||2359||n||3.0 / 922||tilting||Y||1/4000s||11.0||Y||Y|
|16.||Sony RX10 III||2359||Y||3.0 / 1229||tilting||n||1/2000s||14.0||Y||Y|
|17.||Sony HX400V||210||n||3.0 / 921||tilting||n||1/4000s||10.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G1X Mark III has a touchscreen, while the SX70 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
The Canon G1 X Mark III 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.
Both the G1X Mark III and the SX70 have zoom lenses built in. The G1X Mark III has a 24-72mm f/2.8-5.6 optic and the SX70 offers a 21-1365mm f/3.4-6.5 (focal lengths in full frame equivalent terms). Hence, the SX70 provides a wider angle of view at the short end, as well as more tele-photo reach at the long end than the G1X Mark III. The G1X Mark III offers the faster maximum aperture.
Concerning the storage of imaging data, both the G1X Mark III and the SX70 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 G1 X Mark III and Canon PowerShot SX70 HS and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G1 X Mark III||Y||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|2.||Canon SX70||-||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|3.||Canon SX740||-||stereo / mono||-||-||micro||2.0||Y||-||Y|
|4.||Canon 6D Mark II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|6.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|7.||Canon 80D||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|8.||Canon SX540||-||stereo / mono||-||-||mini||2.0||Y||Y||-|
|9.||Canon SX60||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|10.||Fujifilm X100V||Y||stereo / mono||Y||-||micro||3.1||Y||-||Y|
|11.||Fujifilm X-T3||Y||stereo / mono||Y||Y||micro||3.1||Y||-||Y|
|12.||Fujifilm X100F||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|13.||Nikon D7500||Y||stereo / mono||Y||Y||mini||2.0||Y||-||Y|
|14.||Sony A6300||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|15.||Sony A6500||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|16.||Sony RX10 III||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|17.||Sony HX400V||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
It is notable that the G1X Mark III has a hotshoe, while the SX70 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the G1X Mark III and the SX70 are recent models that are part of the current product line-up. The G1X Mark III replaced the earlier Canon G1 X Mark II, while the SX70 followed on from the Canon SX60 . 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 G1 X Mark III or the Canon SX70 – 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.
Arguments in favor of the Canon PowerShot G1 X Mark III:
- More detail: Offers more megapixels (24 vs 20.2MP) with a 11% higher linear resolution.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Better light gathering: Has a lens with a wider maximum aperture (f/2.8 vs f/3.4).
- More compact: Is smaller (115x78mm vs 127x91mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 209g or 34 percent) and hence easier to carry around.
- 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 device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been on the market for longer (launched in October 2017).
Advantages of the Canon PowerShot SX70 HS:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better jpgs: Has a more modern image processing engine (DIGIC 8 vs DIGIC 7).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
- More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
- Longer lasting: Gets more shots (325 versus 200) out of a single battery charge.
- More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
- More modern: Was introduced somewhat (11 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the G1X Mark III is the clear winner of the match-up (17 : 9 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 Mark III and the Canon SX70 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best Superzoom Camera listings whether the two cameras rank among the cream of the crop.
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 G1X Mark III or the SX70 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 where reviews by experts come in. 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.
|1.||Canon G1 X Mark III||5/5||+||4/5||79/100||4.5/5||4.5/5||Oct 2017||1,299|
|2.||Canon SX70||..||+ +||3.5/5||..||3.5/5||3.5/5||Sep 2018||549|
|3.||Canon SX740||..||+||3.5/5||..||4/5||4/5||Jul 2018||399|
|4.||Canon 6D Mark II||4/5||+||4/5||80/100||4.5/5||4/5||Jun 2017||1,999|
|5.||Canon G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529|
|6.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399|
|7.||Canon 80D||4/5||+ +||4.5/5||84/100||4.5/5||4.5/5||Feb 2016||1,199|
|8.||Canon SX540||..||..||..||..||..||..||Jan 2016||399|
|9.||Canon SX60||3/5||+ +||..||75/100||4/5||4.5/5||Sep 2014||549|
|10.||Fujifilm X100V||5/5||+ +||4.5/5||86/100||5/5||4.5/5||Feb 2020||1,399|
|11.||Fujifilm X-T3||5/5||+ +||4.5/5||88/100||5/5||5/5||Sep 2018||1,499|
|12.||Fujifilm X100F||5/5||+||3.9/5||83/100||4.5/5||4.5/5||Jan 2017||1,299|
|13.||Nikon D7500||4.5/5||+ +||4.5/5||86/100||5/5||4.5/5||Apr 2017||1,299|
|14.||Sony A6300||4.5/5||+||..||85/100||5/5||5/5||Feb 2016||999|
|15.||Sony A6500||5/5||+ +||3.5/5||85/100||4.5/5||4.5/5||Oct 2016||1,399|
|16.||Sony RX10 III||5/5||+||..||84/100||4.5/5||4.5/5||Mar 2016||1,499|
|17.||Sony HX400V||4/5||+ +||..||..||4/5||4/5||Feb 2014||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 750D vs Canon SX70
- Canon G1 X Mark III vs Fujifilm GFX 100
- Canon G1 X Mark III vs Nikon D3100
- Canon G1 X Mark III vs Nikon D600
- Canon G1 X Mark III vs Pentax Q
- Canon G1 X Mark III vs Sony A3000
- Canon G1 X Mark III vs Sony NEX-5N
- Canon SX70 vs Fujifilm X-T10
- Canon SX70 vs Nikon D4
- Canon SX70 vs Nikon D60
- Canon SX70 vs Nikon D850
- Canon SX70 vs Sony A7S
Specifications: Canon G1 X Mark III vs Canon SX70
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 Mark III||Canon SX70|
|Camera Type||Fixed lens compact camera||Fixed lens compact camera|
|Camera Lens||24-72mm f/2.8-5.6||21-1365mm f/3.4-6.5|
|Launch Date||October 2017||September 2018|
|Launch Price||USD 1,299||USD 549|
|Sensor Specs||Canon G1 X Mark III||Canon SX70|
|Sensor Format||APS-C Sensor||1/2.3" Sensor|
|Sensor Size||22.3 x 14.9 mm||6.17 x 4.55 mm|
|Sensor Area||332.27 mm2||28.0735 mm2|
|Sensor Diagonal||26.8 mm||7.7 mm|
|Sensor Resolution||24 Megapixels||20.2 Megapixels|
|Image Resolution||6000 x 4000 pixels||5184 x 3888 pixels|
|Pixel Pitch||3.72 μm||1.18 μm|
|Pixel Density||7.22 MP/cm2||71.80 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p Video||4K/30p Video|
|ISO Setting||100 - 25,600 ISO||100 - 3,200 ISO|
|Image Processor||DIGIC 7||DIGIC 8|
|Screen Specs||Canon G1 X Mark III||Canon SX70|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||922k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G1 X Mark III||Canon SX70|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/2000s|
|Continuous Shooting||9 shutter flaps/s||10 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|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||UHS-I||UHS-I|
|Connectivity Specs||Canon G1 X Mark III||Canon SX70|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Canon G1 X Mark III||Canon SX70|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||200 shots per charge||325 shots per charge|
115 x 78 x 51 mm
(4.5 x 3.1 x 2.0 in)
127 x 91 x 117 mm
(5.0 x 3.6 x 4.6 in)
|Camera Weight||399 g (14.1 oz)||608 g (21.4 oz)|
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