Canon G9 X vs Sony A58
The Canon PowerShot G9 X and the Sony Alpha SLT-A58 are two digital cameras that were officially introduced, respectively, in October 2015 and February 2013. The G9X is a fixed lens compact, while the A58 is a DSLR. The cameras are based on an one-inch (G9X) 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 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 and the Sony A58 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 size dimensions are rounded to the nearest millimeter.
The G9X 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. In this context, it is worth noting that neither the G9X nor the A58 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G9X 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 gets 220 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 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529||ebay.com|
|2.||Sony A58||129 mm||95 mm||78 mm||492 g||690||n||Feb 2013||599||ebay.com|
|3.||Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529||amazon.com|
|4.||Canon SX620||97 mm||57 mm||28 mm||182 g||295||n||May 2016||279||amazon.com|
|5.||Canon G3 X||123 mm||77 mm||105 mm||733 g||300||Y||Jun 2015||999||amazon.com|
|6.||Canon G5 X||112 mm||76 mm||44 mm||353 g||210||n||Oct 2015||799||ebay.com|
|7.||Canon M10||108 mm||67 mm||35 mm||301 g||255||n||Oct 2015||499||ebay.com|
|8.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249||ebay.com|
|9.||Canon 1200D||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||ebay.com|
|10.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699||ebay.com|
|11.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449||ebay.com|
|12.||Nikon 1 J4||100 mm||60 mm||29 mm||232 g||300||n||Apr 2014||549||ebay.com|
|13.||Nikon D3300||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499||ebay.com|
|14.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699||ebay.com|
|15.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||ebay.com|
|16.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599||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.|
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The G9X 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 G9 X 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 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 is much more recent (by 2 years and 7 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 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.
In terms of underlying technology, the G9X is build around a BSI-CMOS sensor, while the A58 uses a CMOS 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 determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A58 offers substantially better image quality than the G9X (overall score 11 points higher). The advantage is based on 1.8 bits higher color depth, 0.2 EV in additional dynamic range, and 0.6 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.
|1.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|3.||Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|5.||Canon G3 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||521||63|
|6.||Canon G5 X||1-inch||20.0||5472||3648||1080/60p||21.8||11.9||227||61|
|10.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|12.||Nikon 1 J4||1-inch||18.2||5232||3488||1080/60p||20.8||10.7||426||53|
|15.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|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 provides a higher frame rate than the A58. It can shoot video footage at 1080/60p, while the Sony is limited to 1080/60i.
Apart from 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 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 and Sony A58 along with similar information for a selection of comparators.
|1.||Canon G9 X||none||n||3.0 / 1040||fixed||Y||1/2000s||6.0/s||Y||Y|
|2.||Sony A58||1440||n||2.7 / 460||tilting||n||1/4000s||5.0/s||Y||Y|
|3.||Canon G9 X Mark II||none||n||3.0 / 1040||fixed||Y||1/2000s||8.2/s||Y||Y|
|4.||Canon SX620||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|5.||Canon G3 X||optional||n||3.2 / 1620||tilting||Y||1/2000s||5.9/s||Y||Y|
|6.||Canon G5 X||2360||n||3.0 / 1040||swivel||Y||1/2000s||5.9/s||Y||Y|
|7.||Canon M10||none||n||3.0 / 1040||tilting||Y||1/4000s||4.6/s||Y||n|
|8.||Canon SX610||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|9.||Canon 1200D||optical||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||n|
|10.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5/s||Y||Y|
|11.||Canon S120||none||n||3.0 / 922||fixed||Y||1/2000s||12.1/s||Y||Y|
|12.||Nikon 1 J4||none||n||3.0 / 1037||Fixed||Y||1/4000s||60.0/s||Y||n|
|13.||Nikon D3300||optical||n||3.0 / 921||fixed||n||1/4000s||5.0/s||Y||n|
|14.||Sony A68||1440||Y||2.7 / 460||tilting||n||1/4000s||8.0/s||Y||Y|
|15.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||Y|
|16.||Sony A6000||1440||n||3.0 / 922||tilting||n||1/4000s||11.0/s||Y||n|
|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 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 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 writes its imaging data to SDXC cards, while the A58 uses SDXC or Memory Stick PRO Duo cards. The G9X 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 and Sony Alpha SLT-A58 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G9 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|2.||Sony A58||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Canon G9 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|4.||Canon SX620||-||mono / mono||-||-||micro||2.0||Y||Y||-|
|5.||Canon G3 X||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|6.||Canon G5 X||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|7.||Canon M10||-||stereo / mono||-||-||mini||2.0||Y||Y||-|
|8.||Canon SX610||-||- / -||-||-||micro||2.0||Y||Y||-|
|9.||Canon 1200D||Y||mono / mono||-||-||mini||2.0||-||-||-|
|10.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|11.||Canon S120||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|12.||Nikon 1 J4||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|13.||Nikon D3300||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|14.||Sony A68||Y||stereo / mono||Y||-||micro||2.0||-||-||-|
|15.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony A6000||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony RX100||-||stereo / mono||-||-||micro||2.0||-||-||-|
It is notable that the G9X offers wifi support, while the A58 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Both the G9X and the A58 have been discontinued, but can regularly be found used on ebay. The A58 was replaced by the Sony A68, while the G9X was followed by the Canon G9 X 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 Sony websites.
So what is the bottom line? Is the Canon G9 X better than the Sony A58 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon PowerShot G9 X:
- 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 (6 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.
- 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 2 years and 7 months of technical progress since the A58 launch.
Advantages of the Sony Alpha SLT-A58:
- Better image quality: Scores substantially higher (11 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.8 bits more color depth).
- Better low-light sensitivity: Can shoot in dim conditions (0.6 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 220) 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 number of relative strengths (bullet points above) is taken as a guide, the G9X is the clear winner of the match-up (15 : 11 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 G9 X 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the G9X or the A58 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 why expert reviews are important. 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 G9 X||3.5/5||+ +||..||..||4.5/5||4.5/5||Oct 2015||529||ebay.com|
|2.||Sony A58||3/5||..||..||..||4.5/5||4.5/5||Feb 2013||599||ebay.com|
|3.||Canon G9 X Mark II||4/5||..||4/5||75/100||4.5/5||4.5/5||Jan 2017||529||amazon.com|
|4.||Canon SX620||..||..||..||..||..||4/5||May 2016||279||amazon.com|
|5.||Canon G3 X||3.5/5||+||..||..||4.5/5||4/5||Jun 2015||999||amazon.com|
|6.||Canon G5 X||5/5||+ +||..||78/100||4.5/5||4.5/5||Oct 2015||799||ebay.com|
|7.||Canon M10||..||..||..||..||..||4/5||Oct 2015||499||ebay.com|
|8.||Canon SX610||..||..||..||..||4/5||4/5||Jan 2015||249||ebay.com|
|9.||Canon 1200D||3/5||+||..||..||4/5||4.5/5||Feb 2014||449||ebay.com|
|10.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699||ebay.com|
|11.||Canon S120||..||+ +||..||..||4.5/5||4.5/5||Aug 2013||449||ebay.com|
|12.||Nikon 1 J4||3/5||..||..||..||4.5/5||4/5||Apr 2014||549||ebay.com|
|13.||Nikon D3300||3/5||+||..||77/100||4.5/5||4.5/5||Jan 2014||499||ebay.com|
|14.||Sony A68||3/5||..||..||..||4/5||4/5||Nov 2015||699||ebay.com|
|15.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999||ebay.com|
|16.||Sony A6000||5/5||+||4.5/5||80/100||4.5/5||5/5||Feb 2014||599||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 review scores listed above should be treated 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. 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, 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 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||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||October 2015||February 2013|
|Launch Price||USD 529||USD 599|
|Sensor Specs||Canon G9 X||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 6||BIONZ|
|DXO Sensor Quality (score)||63||74|
|DXO Color Depth (bits)||21.5||23.3|
|DXO Dynamic Range (EV)||12.3||12.5|
|DXO Low Light (ISO)||495||753|
|Screen Specs||Canon G9 X||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||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||6 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||Built-in Flash||Built-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||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|
|Body Specs||Canon G9 X||Sony A58|
|Battery Life (CIPA)||220 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||209 g (7.4 oz)||492 g (17.4 oz)|
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