Canon G7 X Mark III vs SX70
The Canon PowerShot G7 X Mark III and the Canon PowerShot SX70 HS are two digital cameras that were officially introduced, respectively, in July 2019 and September 2018. Both the G7X Mark III and the SX70 are fixed lens compact cameras that are based on an one-inch (G7X Mark III) and a 1/2.3-inch (SX70) sensor. The G7X Mark III has a resolution of 20 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.
|Canon G7 X Mark III||Canon SX70|
|Fixed lens compact camera||Fixed lens compact camera|
|24-100mm f/1.8-2.8||21-1365mm f/3.4-6.5|
|20 MP, 1" Sensor||20.2 MP, 1/2.3" Sensor|
|4K/30p Video||4K/30p Video|
|ISO 125-12,800 (125 - 25,600)||ISO 100-3,200|
|No viewfinder, LCD framing||Electronic viewfinder (2360k dots)|
|3.0 LCD, 1040k dots||3.0 LCD, 922k dots|
|Tilting touchscreen||Swivel screen (not touch-sensitive)|
|30 shutter flaps per second||10 shutter flaps per second|
|235 shots per battery charge||325 shots per battery charge|
|105 x 61 x 41 mm, 304 g||127 x 91 x 117 mm, 608 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 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.
An illustration of the physical size and weight of the Canon G7 X Mark III and the Canon SX70 is provided 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 measures are rounded to the nearest millimeter.
The G7X Mark III can be obtained in two different colors (black, silver), while the SX70 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 Canon SX70 is considerably larger (80 percent) than the Canon G7 X Mark III. Moreover, the SX70 is substantially heavier (100 percent) than the G7X Mark III. In this context, it is worth noting that neither the G7X Mark III nor the SX70 are weather-sealed.
Concerning battery life, the G7X Mark III gets 235 shots out of its NB-13L battery, while the SX70 can take 325 images on a single charge of its LP-E12 power pack. The power pack in the G7X Mark III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Canon G7 X Mark III||4.1 in||2.4 in||1.6 in||10.7 oz||235||n||Jul 2019||749|
|Canon SX70||5.0 in||3.6 in||4.6 in||21.4 oz||325||n||Sep 2018||549|
|Canon G5 X Mark II||4.4 in||2.4 in||1.8 in||12.0 oz||230||n||Jul 2019||899|
|Canon SX740||4.3 in||2.5 in||1.6 in||10.5 oz||265||n||Jul 2018||399|
|Canon G9 X Mark II||3.9 in||2.3 in||1.2 in||7.3 oz||235||n||Jan 2017||529|
|Canon SX730||4.3 in||2.5 in||1.6 in||10.6 oz||250||n||Apr 2017||399|
|Canon G7 X Mark II||4.2 in||2.4 in||1.7 in||11.3 oz||265||n||Feb 2016||699|
|Canon G5 X||4.4 in||3.0 in||1.7 in||12.5 oz||210||n||Oct 2015||799|
|Canon G7 X||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699|
|Canon SX60||5.0 in||3.7 in||4.5 in||22.9 oz||340||n||Sep 2014||549|
|Leica C-LUX||4.4 in||2.6 in||1.8 in||12.0 oz||370||n||Jun 2018||1,049|
|Panasonic FZ1000 II||5.4 in||3.8 in||5.2 in||28.6 oz||350||n||Feb 2019||899|
|Panasonic ZS200||4.4 in||2.6 in||1.8 in||12.0 oz||370||n||Feb 2018||799|
|Sony ZV-1||4.1 in||2.4 in||1.7 in||10.4 oz||260||n||May 2020||799|
|Sony RX100 VI||4.0 in||2.3 in||1.7 in||10.6 oz||240||n||Jun 2018||1,199|
|Sony HX400V||5.1 in||3.7 in||4.1 in||23.3 oz||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.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
Any camera decision will naturally be influenced heavily by the price. 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 27 percent) than the G7X Mark III, which puts it into a different market segment. 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.
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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G7 X Mark III features an one-inch sensor and the Canon SX70 a 1/2.3-inch sensor. The sensor area in the SX70 is 76 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 5.6. The sensor in the G7X Mark III has a native 3:2 aspect ratio, while the one in the SX70 offers a 4:3 aspect.
Despite having a smaller sensor, the SX70 offers a slightly higher resolution of 20.2 megapixels, compared with 20 MP of the G7X Mark III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.18μm versus 2.41μm for the G7X Mark III). Moreover, it should be noted that the G7X Mark III is a somewhat more recent model (by 9 months) than the SX70, and its sensor might have benefitted from technological advances during this time that further 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 Canon PowerShot G7 X Mark III 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 Canon PowerShot SX70 HS are ISO 100 to ISO 3200 (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.
|Canon G7 X Mark III||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Canon G5 X Mark II||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|Canon G5 X||1-inch||20.0||5472||3648||1080/60p||..||..||..||..|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Panasonic FZ1000 II||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
|Sony RX100 VI||1-inch||20.0||5472||3648||4K/30p||..||..||..||..|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the SX70 has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G7X Mark III relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon G7 X Mark III and Canon SX70 in connection with corresponding information for a sample of similar cameras.
|Canon G7 X Mark III||none||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|Canon G5 X Mark II||2360||n||3.0||1040||tilting||Y||1/2000s||30||Y||Y|
|Canon G9 X Mark II||none||n||3.0||1040||fixed||Y||1/2000s||8.2||Y||Y|
|Canon G7 X Mark II||none||n||3.0||1040||tilting||Y||1/2000s||8.0||Y||Y|
|Canon G5 X||2360||n||3.0||1040||swivel||Y||1/2000s||5.9||Y||Y|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y|
|Panasonic FZ1000 II||2360||n||3.0||1240||swivel||Y||1/4000s||12.0||Y||Y|
|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 G7X 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 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 G7X Mark III 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 G7 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 G7X Mark III and the SX70 have zoom lenses built in. The G7X Mark III has a 24-100mm f/1.8-2.8 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 G7X Mark III. The G7X Mark III offers the faster maximum aperture.
Concerning the storage of imaging data, both the G7X 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 G7 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.
| WiFi |
|Canon G7 X Mark III||-||stereo||mono||Y||-||micro||3.1||Y||-||Y|
|Canon G5 X Mark II||-||stereo||mono||-||-||micro||3.1||Y||-||Y|
|Canon G9 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
|Canon G7 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Canon G5 X||Y||stereo||mono||-||-||mini||2.0||Y||Y||-|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Panasonic FZ1000 II||Y||stereo||mono||Y||-||micro||2.0||Y||-||Y|
|Sony RX100 VI||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
Both the G7X Mark III and the SX70 are recent models that are part of the current product line-up. The SX70 replaced the earlier Canon SX60 , while the G7X Mark III followed on from the Canon G7X 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 website.
So what conclusions can be drawn? Which of the two cameras – the Canon G7 X Mark III or the Canon SX70 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon PowerShot G7 X Mark III:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features a larger and more technologically advanced imaging 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.
- 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.
- Faster burst: Shoots at higher frequency (30 vs 10 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.
- Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/3.4).
- More compact: Is smaller (105x61mm vs 127x91mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 304g or 50 percent) and hence easier to carry around.
- 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).
- More modern: Is somewhat more recent (announced 9 months after the SX70).
Reasons to prefer the Canon PowerShot SX70 HS:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- 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 235) out of a single battery charge.
- More affordable: Was introduced into a lower priced category (27 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in September 2018).
If the count of individual advantages (bullet points above) is taken as a guide, the G7X Mark III is the clear winner of the match-up (15 : 8 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. 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 G7 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the G7X Mark III and the SX70 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Canon G7 X Mark III||+ +||81/100||4/5||..||..||Jul 2019||749|
|Canon SX70||+ +||..||3.5/5||..||3.5/5||Sep 2018||549|
|Canon G5 X Mark II||+||82/100||..||..||4/5||Jul 2019||899|
|Canon SX740||+||..||4/5||..||4/5||Jul 2018||399|
|Canon G9 X Mark II||..||75/100||4.5/5||4.5/5||4.5/5||Jan 2017||529|
|Canon SX730||+||..||4/5||..||4/5||Apr 2017||399|
|Canon G7 X Mark II||+ +||81/100||4.5/5||4/5||4.5/5||Feb 2016||699|
|Canon G5 X||+ +||78/100||4.5/5||4/5||4.5/5||Oct 2015||799|
|Canon G7 X||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699|
|Canon SX60||+ +||75/100||4/5||..||4.5/5||Sep 2014||549|
|Leica C-LUX||..||..||4.5/5||..||4/5||Jun 2018||1,049|
|Panasonic FZ1000 II||..||83/100||4.5/5||..||4.5/5||Feb 2019||899|
|Panasonic ZS200||+ +||81/100||4.5/5||..||4.5/5||Feb 2018||799|
|Sony ZV-1||..||..||..||..||4.5/5||May 2020||799|
|Sony RX100 VI||+ +||83/100||4/5||..||4.5/5||Jun 2018||1,199|
|Sony HX400V||+ +||..||4/5||..||4/5||Feb 2014||499|
|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. 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.
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.
- Canon 10D vs Canon SX70
- Canon 5D Mark IV vs Canon SX70
- Canon G7 X Mark III vs Canon SX520
- Canon G7 X Mark III vs Panasonic G110
- Canon G7 X Mark III vs Sony A6600
- Canon G7 X Mark III vs Sony A9 II
- Canon SX70 vs Fujifilm X100S
- Canon SX70 vs Nikon D810
- Canon SX70 vs Panasonic GH3
- Canon SX70 vs Panasonic LX5
- Canon SX70 vs Pentax K-70
- Canon SX70 vs Sony A6400
Specifications: Canon G7 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 G7 X Mark III||Canon SX70|
|Camera Type||Fixed lens compact camera||Fixed lens compact camera|
|Camera Lens||24-100mm f/1.8-2.8||21-1365mm f/3.4-6.5|
|Launch Date||July 2019||September 2018|
|Launch Price||USD 749||USD 549|
|Sensor Specs||Canon G7 X Mark III||Canon SX70|
|Sensor Format||1" Sensor||1/2.3" Sensor|
|Sensor Size||13.2 x 8.8 mm||6.17 x 4.55 mm|
|Sensor Area||116.16 mm2||28.0735 mm2|
|Sensor Diagonal||15.9 mm||7.7 mm|
|Sensor Resolution||20 Megapixels||20.2 Megapixels|
|Image Resolution||5472 x 3648 pixels||5184 x 3888 pixels|
|Pixel Pitch||2.41 μm||1.18 μm|
|Pixel Density||17.18 MP/cm2||71.80 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||125 - 12,800 ISO||100 - 3,200 ISO|
|ISO Boost||125 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 8||DIGIC 8|
|Screen Specs||Canon G7 X Mark III||Canon SX70|
|Viewfinder Type||no viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2360k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||922k dots|
|LCD Attachment||Tilting screen||Swivel screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G7 X Mark III||Canon SX70|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/2000s|
|Continuous Shooting||30 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||up to 1/25600s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|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 G7 X Mark III||Canon SX70|
|External Flash||no Hotshoe||no Hotshoe|
|USB Connector||USB 3.1||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Canon G7 X Mark III||Canon SX70|
|Battery Life (CIPA)||235 shots per charge||325 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
105 x 61 x 41 mm
(4.1 x 2.4 x 1.6 in)
127 x 91 x 117 mm
(5.0 x 3.6 x 4.6 in)
|Camera Weight||304 g (10.7 oz)||608 g (21.4 oz)|
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