Canon G9 X Mark II vs Sony A58
The Canon PowerShot G9 X Mark II and the Sony Alpha SLT-A58 are two digital cameras that were announced, respectively, in January 2017 and February 2013. The G9X Mark II is a fixed lens compact, while the A58 is a DSLR. The cameras are based on an one-inch (G9X Mark II) and an APS-C (A58) sensor. The Canon has a resolution of 20 megapixels, whereas the Sony provides 19.8 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 Sony Alpha SLT-A58? 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 G9 X Mark II and the Sony A58 is provided 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 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 A58 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 Sony A58 is considerably larger (116 percent) than the Canon G9 X Mark II. In this context, it is worth noting that neither the G9X Mark II nor the A58 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G9X Mark II has a lens built in, whereas the A58 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 G9X Mark II gets 235 shots out of its NB-13L battery, while the A58 can take 690 images on a single charge of its NP-FM500H 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|
|2.||Sony A58||129 mm||95 mm||78 mm||492 g||690||n||Feb 2013||599|
|3.||Canon 2000D||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|4.||Canon SX70||127 mm||91 mm||117 mm||608 g||325||n||Sep 2018||549|
|5.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|6.||Canon 200D||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|7.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499|
|8.||Canon SX620||97 mm||57 mm||28 mm||182 g||295||n||May 2016||279|
|9.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529|
|10.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|11.||Nikon D3300||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499|
|12.||Sony HX99||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||449|
|13.||Sony HX95||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||429|
|14.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699|
|15.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|16.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599|
|17.||Sony RX100||102 mm||58 mm||36 mm||240 g||330||n||Jun 2012||649|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
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 G9X Mark II was launched at a lower price than the A58, despite having a lens built in. 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 sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels 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 are more costly to manufacture and tend to 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 Sony A58 an APS-C sensor. The sensor area in the A58 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.
Despite having a smaller sensor, the Canon G9 X Mark II offers a higher resolution of 20 megapixels, compared with 19.8 MP of the Sony A58. 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 2.41μm versus 4.31μm for the A58). However, it should be noted that the G9X Mark II is much more recent (by 3 years and 10 months) than the A58, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The Canon PowerShot G9 X Mark II has a native sensitivity range from ISO 125 to ISO 12800. The corresponding ISO settings for the Sony Alpha SLT-A58 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 100-25600.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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. Of the two cameras under consideration, the A58 has a markedly higher DXO score than the G9X Mark II (overall score 9 points higher), which will translate into better image quality. The advantage is based on 1.4 bits higher color depth, and 0.5 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
| DXO |
|1.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|9.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|15.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
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, but the G9X Mark II provides a higher frame rate than the A58. It can shoot video footage at 1080/60p, while the Sony is limited to 1080/60i.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A58 has an electronic viewfinder (1440k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G9X Mark II relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Canon G9 X Mark II and Sony A58 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||Y||Y|
|9.||Canon G9 X||none||n||3.0||1040||fixed||Y||1/2000s||6.0||Y||Y|
|15.||Sony A7 II||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The G9X Mark II has a touchscreen, while the A58 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.
The G9X Mark II writes its imaging data to SDXC cards, while the A58 uses SDXC or Memory Stick PRO Duo cards. The G9X Mark II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the A58 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 Sony Alpha SLT-A58 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon G9 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
|9.||Canon G9 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|15.||Sony A7 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the G9X Mark II offers wifi support, while the A58 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The G9X Mark II is a recent model that features in the current product line-up of Canon. In contrast, the A58 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the A58 was succeeded by the Sony A68. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.
So how do things add up? Is there a clear favorite between the Canon G9 X Mark II and the Sony A58? Which camera is better? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Canon PowerShot G9 X Mark II:
- Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 460k 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 5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with a built-in lens, while the A58 requires a separate lens.
- More compact: Is smaller (98x58mm vs 129x95mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the A58).
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- 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 affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 3 years and 10 months of technical progress since the A58 launch.
Advantages of the Sony Alpha SLT-A58:
- Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.4 bits more color depth).
- Better low-light sensitivity: Can shoot in dim conditions (0.5 stops ISO advantage).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/4000s 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 (690 versus 235) 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 February 2013).
If the count of relative strengths (bullet points above) is taken as a measure, the G9X Mark II is the clear winner of the match-up (16 : 11 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 G9 X Mark II and the Sony A58 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 G9X Mark II or the A58 perform in practice. 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 (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 G9 X Mark II||4/5||..||75/100||4.5/5||4.5/5||Jan 2017||529|
|2.||Sony A58||3/5||..||..||4.5/5||4.5/5||Feb 2013||599|
|3.||Canon 2000D||..||o||..||3.5/5||3.5/5||Feb 2018||449|
|4.||Canon SX70||..||+ +||..||3.5/5||3.5/5||Sep 2018||549|
|5.||Canon 77D||4.5/5||..||82/100||4.5/5||4/5||Feb 2017||899|
|6.||Canon 200D||4/5||+ +||78/100||4.5/5||4.5/5||Jun 2017||549|
|7.||Canon M100||3/5||+||..||4/5||3.5/5||Aug 2017||499|
|8.||Canon SX620||..||..||..||..||4/5||May 2016||279|
|9.||Canon G9 X||3.5/5||+ +||..||4.5/5||4.5/5||Oct 2015||529|
|10.||Canon S120||..||+ +||..||4.5/5||4.5/5||Aug 2013||449|
|11.||Nikon D3300||3/5||+||77/100||4.5/5||4.5/5||Jan 2014||499|
|12.||Sony HX99||..||..||..||4/5||4.5/5||Aug 2018||449|
|13.||Sony HX95||..||..||..||..||..||Aug 2018||429|
|14.||Sony A68||3/5||..||..||4/5||4/5||Nov 2015||699|
|15.||Sony A7 II||5/5||+||82/100||4.5/5||5/5||Nov 2014||1,999|
|16.||Sony A6000||5/5||+||80/100||4.5/5||5/5||Feb 2014||599|
|17.||Sony RX100||5/5||+ +||78/100||4/5||5/5||Jun 2012||649|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 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 G9 X Mark II vs Sony A58
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||Sony A58|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||28-84mm f/2.0-4.9||Sony A mount lenses|
|Launch Date||January 2017||February 2013|
|Launch Price||USD 529||USD 599|
|Sensor Specs||Canon G9 X Mark II||Sony A58|
|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||19.8 Megapixels|
|Image Resolution||5472 x 3648 pixels||5456 x 3632 pixels|
|Pixel Pitch||2.41 μm||4.31 μm|
|Pixel Density||17.18 MP/cm2||5.41 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60i Video|
|ISO Setting||125 - 12,800 ISO||100 - 16,000 ISO|
|ISO Boost||no Enhancement||100 - 25,600 ISO|
|Image Processor||DIGIC 7||BIONZ|
|DXO Sensor Quality (score)||65||74|
|DXO Color Depth (bits)||21.9||23.3|
|DXO Dynamic Range (EV)||12.5||12.5|
|DXO Low Light (ISO)||522||753|
|Screen Specs||Canon G9 X Mark II||Sony A58|
|Viewfinder Type||no viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||1440k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||2.7inch|
|LCD Resolution||1040k dots||460k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G9 X Mark II||Sony A58|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/4000s|
|Continuous Shooting||8.2 shutter flaps/s||5 shutter flaps/s|
|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||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||no|
|Connectivity Specs||Canon G9 X Mark II||Sony A58|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Canon G9 X Mark II||Sony A58|
|Battery Life (CIPA)||235 shots per charge||690 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)
129 x 95 x 78 mm
(5.1 x 3.7 x 3.1 in)
|Camera Weight||206 g (7.3 oz)||492 g (17.4 oz)|
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