Canon G9 X Mark II vs SX420
The Canon PowerShot G9 X Mark II and the Canon PowerShot SX420 IS are two digital cameras that were announced, respectively, in January 2017 and January 2016. Both the G9X Mark II and the SX420 are fixed lens compact cameras that are based on an one-inch (G9X Mark II) and a 1/2.3-inch (SX420) sensor. The G9X Mark II has a resolution of 20 megapixels, whereas the SX420 provides 19.9 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 G9 X Mark II and the Canon PowerShot SX420 IS? 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 side-by-side display below illustrates the physical size and weight of the Canon G9 X Mark II and the Canon SX420. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The G9X Mark II can be obtained in two different colors (black, silver), while the SX420 is also available in two color-versions, but different ones (black, red).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SX420 is notably larger (26 percent) than the Canon G9 X Mark II. Moreover, the SX420 is substantially heavier (58 percent) than the G9X Mark II. In this context, it is worth noting that neither the G9X Mark II nor the SX420 are weather-sealed.
Concerning battery life, the G9X Mark II gets 235 shots out of its NB-13L battery, while the SX420 can take 195 images on a single charge of its NB-11LH power pack. The power pack in the G9X 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 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.
|1.||Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529||amazon.com|
|2.||Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299||ebay.com|
|3.||Canon SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549||amazon.com|
|4.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299||amazon.com|
|5.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499||ebay.com|
|6.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|7.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399||ebay.com|
|8.||Canon G7 X Mark II||106 mm||61 mm||42 mm||319 g||265||n||Feb 2016||699||ebay.com|
|9.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529||ebay.com|
|10.||Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279||ebay.com|
|11.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249||ebay.com|
|12.||Canon SX710||113 mm||66 mm||35 mm||269 g||230||n||Jan 2015||349||ebay.com|
|13.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699||ebay.com|
|14.||Sony HX99||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||449||amazon.com|
|15.||Sony HX95||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||429||amazon.com|
|16.||Sony RX100 V||102 mm||58 mm||41 mm||299 g||220||n||Oct 2016||999||ebay.com|
|17.||Sony RX100||102 mm||58 mm||36 mm||240 g||330||n||Jun 2012||649||ebay.com|
|Note: 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. The SX420 was launched at a markedly lower price (by 43 percent) than the G9X Mark II, 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.
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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G9 X Mark II features an one-inch sensor and the Canon SX420 a 1/2.3-inch sensor. The sensor area in the SX420 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 G9X Mark II has a native 3:2 aspect ratio, while the one in the SX420 offers a 4:3 aspect.
In terms of chip-set technology, the G9X Mark II uses a more advanced image processing engine (DIGIC 7) than the SX420 (DIGIC 4+), with benefits for noise reduction, color accuracy, and processing speed.
With 20MP, the G9X Mark II offers a slightly higher resolution than the SX420 (19.9MP), but the G9X Mark II nevertheless has larger individual pixels (pixel pitch of 2.41μm versus 1.19μm for the SX420) due to its larger sensor. Moreover, the G9X Mark II is a somewhat more recent model (by 1 year) than the SX420, 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 SX420 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The Canon PowerShot G9 X Mark II has a native sensitivity range from ISO 125 to ISO 12800. The corresponding ISO settings for the Canon PowerShot SX420 IS are ISO 100 to ISO 1600 (no boost).
In terms of underlying technology, the G9X Mark II is build around a BSI-CMOS sensor, while the SX420 uses a CCD 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.
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 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 G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|8.||Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.8||11.9||260||62|
|9.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|13.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|16.||Sony RX100 V||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the G9X Mark II provides a higher video resolution than the SX420. It can shoot video footage at 1080/60p, while the SX420 is limited to 720/25p.
Apart from body and sensor, cameras can and do differ across a variety of features. The G9X Mark II and the SX420 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. The adjacent table lists some of the other core features of the Canon G9 X Mark II and Canon SX420 along with similar information for a selection of comparators.
|1.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2/s||Y||Y|
|2.||Canon SX420||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|3.||Canon SX70||2360||n||3.0 / 922||swivel||n||1/2000s||10.0/s||Y||Y|
|4.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|5.||Canon M100||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1/s||Y||n|
|6.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|7.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9/s||Y||Y|
|8.||Canon G7 X Mark II||none||n||3.0 / 1040||tilting||Y||1/2000s||8.0/s||Y||Y|
|9.||Canon G9 X||none||n||3.0 / 1040||fixed||Y||1/2000s||6.0/s||Y||Y|
|10.||Canon SX410||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|11.||Canon SX610||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|12.||Canon SX710||none||n||3.0 / 922||fixed||n||1/3200s||6.0/s||Y||Y|
|13.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5/s||Y||Y|
|14.||Sony HX99||638||n||3.0 / 922||tilting||Y||1/2000s||10.0/s||Y||Y|
|15.||Sony HX95||638||n||3.0 / 922||tilting||n||1/2000s||10.0/s||Y||Y|
|16.||Sony RX100 V||2359||n||3.0 / 1229||tilting||n||1/2000s||24.0/s||Y||Y|
|17.||Sony RX100||none||n||3.0 / 1229||fixed||n||1/2000s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G9X Mark II has a touchscreen, while the SX420 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The Canon G9 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.
Both the G9X Mark II and the SX420 have zoom lenses built in. The G9X Mark II has a 28-84mm f/2.0-4.9 optic and the SX420 offers a 24-1008mm f/3.5-6.6 (focal lengths in full frame equivalent terms). Hence, the SX420 provides a wider angle of view at the short end, as well as more tele-photo reach at the long end than the G9X Mark II. The G9X Mark II offers the faster maximum aperture.
Concerning the storage of imaging data, both the G9X Mark II and the SX420 write their files to SDXC cards. The G9X Mark II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the SX420 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 G9 X Mark II and Canon PowerShot SX420 IS and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|2.||Canon SX420||-||mono / mono||-||-||-||2.0||Y||Y||-|
|3.||Canon SX70||-||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|4.||Canon SX430||-||mono / mono||-||-||-||2.0||Y||Y||-|
|5.||Canon M100||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|6.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|8.||Canon G7 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|9.||Canon G9 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|10.||Canon SX410||-||stereo / mono||-||-||-||2.0||-||-||-|
|11.||Canon SX610||-||- / -||-||-||micro||2.0||Y||Y||-|
|12.||Canon SX710||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|13.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|14.||Sony HX99||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|15.||Sony HX95||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|16.||Sony RX100 V||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony RX100||-||stereo / mono||-||-||micro||2.0||-||-||-|
The G9X Mark II is a recent model that features in the current product line-up of Canon. In contrast, the SX420 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the SX420 was succeeded by the Canon SX430. Further information on the features and operation of the G9X Mark II and SX420 can be found, respectively, in the Canon G9 X Mark II Manual (free pdf) or the online Canon SX420 Manual.
So how do things add up? Is there a clear favorite between the Canon G9 X Mark II and the Canon SX420? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon PowerShot G9 X Mark II:
- 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.
- Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 4+).
- Better video: Provides higher definition movie capture (1080/60p vs 720/25p).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster burst: Shoots at higher frequency (8.2 vs 0.5 flaps/sec) to capture the decisive moment.
- 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/2.0 vs f/3.5).
- More compact: Is smaller (98x58mm vs 104x69mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 119g or 37 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (235 versus 195) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Is somewhat more recent (announced 1 year after the SX420).
Arguments in favor of the Canon PowerShot SX420 IS:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- 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.
- More affordable: Was introduced into a lower priced category (43 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in January 2016).
If the number of relative strengths (bullet points above) is taken as a guide, the G9X Mark II is the clear winner of the match-up (19 : 6 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 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 G9 X Mark II and the Canon SX420 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 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 G9X Mark II and the SX420 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 why hands-on reviews by experts 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], 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 G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529||amazon.com|
|2.||Canon SX420||..||..||..||..||..||3/5||Jan 2016||299||ebay.com|
|3.||Canon SX70||..||+ +||3.5/5||..||3.5/5||3.5/5||Sep 2018||549||amazon.com|
|4.||Canon SX430||..||..||..||..||3.5/5||3.5/5||Jan 2017||299||amazon.com|
|5.||Canon M100||3/5||+||..||..||4/5||3.5/5||Aug 2017||499||ebay.com|
|6.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|7.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399||ebay.com|
|8.||Canon G7 X Mark II||4.5/5||+ +||..||81/100||4.5/5||4.5/5||Feb 2016||699||ebay.com|
|9.||Canon G9 X||3.5/5||+ +||..||..||4.5/5||4.5/5||Oct 2015||529||ebay.com|
|10.||Canon SX410||..||o||..||..||..||..||Feb 2015||279||ebay.com|
|11.||Canon SX610||..||..||..||..||4/5||4/5||Jan 2015||249||ebay.com|
|12.||Canon SX710||..||+||..||..||4/5||3.5/5||Jan 2015||349||ebay.com|
|13.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699||ebay.com|
|14.||Sony HX99||..||..||..||..||4/5||4.5/5||Aug 2018||449||amazon.com|
|15.||Sony HX95||..||..||..||..||..||..||Aug 2018||429||amazon.com|
|16.||Sony RX100 V||4.5/5||+ +||..||83/100||4/5||4.5/5||Oct 2016||999||ebay.com|
|17.||Sony RX100||5/5||+ +||..||78/100||4/5||5/5||Jun 2012||649||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you are interested in seeing how other cameras pair up, 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 1D X Mark III vs Canon G9 X Mark II
- Canon 5DS vs Canon G9 X Mark II
- Canon G9 X Mark II vs Nikon D5
- Canon G9 X Mark II vs Panasonic TZ95
- Canon G9 X Mark II vs Sony A5100
- Canon G9 X Mark II vs Sony RX100 V
- Canon SX420 vs Fujifilm X-A3
- Canon SX420 vs Fujifilm X-E2S
- Canon SX420 vs Leica D-LUX Typ 109
- Canon SX420 vs Leica T
- Canon SX420 vs Nikon D600
- Canon SX420 vs Panasonic FZ200
Specifications: Canon G9 X Mark II vs Canon SX420
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 G9 X Mark II||Canon SX420|
|Camera Type||Fixed lens compact camera||Fixed lens compact camera|
|Camera Lens||28-84mm f/2.0-4.9||24-1008mm f/3.5-6.6|
|Launch Date||January 2017||January 2016|
|Launch Price||USD 529||USD 299|
|Sensor Specs||Canon G9 X Mark II||Canon SX420|
|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||19.9 Megapixels|
|Image Resolution||5472 x 3648 pixels||5152 x 3864 pixels|
|Pixel Pitch||2.41 μm||1.19 μm|
|Pixel Density||17.18 MP/cm2||70.91 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p Video||720/25p Video|
|ISO Setting||125 - 12,800 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 7||DIGIC 4+|
|DXO Sensor Quality (score)||65||..|
|DXO Color Depth (bits)||21.9||..|
|DXO Dynamic Range (EV)||12.5||..|
|DXO Low Light (ISO)||522||..|
|Screen Specs||Canon G9 X Mark II||Canon SX420|
|Viewfinder Type||no viewfinder||no viewfinder|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G9 X Mark II||Canon SX420|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||8.2 shutter flaps/s||0.5 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||no|
|Connectivity Specs||Canon G9 X Mark II||Canon SX420|
|External Flash||no Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||no HDMI|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon G9 X Mark II||Canon SX420|
|Battery Life (CIPA)||235 shots per charge||195 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
98 x 58 x 31 mm
(3.9 x 2.3 x 1.2 in)
104 x 69 x 85 mm
(4.1 x 2.7 x 3.3 in)
|Camera Weight||206 g (7.3 oz)||325 g (11.5 oz)|
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