Canon G15 vs SX420
The Canon PowerShot G15 and the Canon PowerShot SX420 IS are two digital cameras that were revealed to the public, respectively, in September 2012 and January 2016. Both the G15 and the SX420 are fixed lens compact cameras that are based on a 1/1.7-inch (G15) and a 1/2.3-inch (SX420) sensor. The G15 has a resolution of 12 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 G15 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 G15 and the Canon SX420. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The SX420 can be obtained in two different colors (black, red), while the G15 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 SX420 is notably smaller (12 percent) than the Canon G15. Moreover, the SX420 is markedly lighter (8 percent) than the G15. In this context, it is worth noting that neither the G15 nor the SX420 are weather-sealed.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 G15||107 mm||76 mm||40 mm||352 g||350||n||Sep 2012||499|
|2.||Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299|
|3.||Canon SX430||104 mm||69 mm||85 mm||323 g||195||n||Jan 2017||299|
|4.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|5.||Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279|
|6.||Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249|
|7.||Canon SX710||113 mm||66 mm||35 mm||269 g||230||n||Jan 2015||349|
|8.||Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549|
|9.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|10.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|11.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|12.||Canon G12||112 mm||76 mm||48 mm||401 g||370||n||Sep 2010||499|
|13.||Fujifilm X20||117 mm||70 mm||57 mm||353 g||270||n||Jan 2013||599|
|14.||Fujifilm X10||117 mm||70 mm||57 mm||350 g||270||n||Sep 2011||599|
|15.||Nikon P7800||119 mm||78 mm||50 mm||399 g||350||n||Sep 2013||549|
|16.||Panasonic LX7||111 mm||68 mm||46 mm||298 g||330||n||Jul 2012||499|
|17.||Panasonic FZ150||124 mm||82 mm||92 mm||528 g||410||n||Aug 2011||499|
|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 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 SX420 was launched at a markedly lower price (by 40 percent) than the G15, 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 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G15 features a 1/1.7-inch sensor and the Canon SX420 a 1/2.3-inch sensor. The sensor area in the SX420 is 35 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 4.6 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
In terms of chip-set technology, the G15 uses a more advanced image processing engine (DIGIC 5) than the SX420 (DIGIC 4+), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the SX420 offers a higher resolution of 19.9 megapixels, compared with 12 MP of the G15. 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 1.19μm versus 1.89μm for the G15). However, it should be noted that the SX420 is much more recent (by 3 years and 3 months) than the G15, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. 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 resolution advantage of the Canon SX420 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX420 for good quality output (200 dots per inch) amounts to 25.8 x 19.3 inches or 65.4 x 49.1 cm, for very good quality (250 dpi) 20.6 x 15.5 inches or 52.3 x 39.3 cm, and for excellent quality (300 dpi) 17.2 x 12.9 inches or 43.6 x 32.7 cm. The corresponding values for the Canon G15 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.
The Canon PowerShot G15 has a native sensitivity range from ISO 80 to ISO 12800. The corresponding ISO settings for the Canon PowerShot SX420 IS are ISO 100 to ISO 1600 (no boost).
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. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|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 have a sensor with sufficiently fast read-out times for moving pictures, but the G15 provides a higher video resolution than the SX420. It can shoot video footage at 1080/24p, while the SX420 is limited to 720/25p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G15 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX420 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon G15, the Canon SX420, and comparable cameras.
|1.||Canon G15||optical||n||3.0 / 922||fixed||n||1/4000s||2.1/s||Y||Y|
|2.||Canon SX420||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|3.||Canon SX430||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|4.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9/s||Y||Y|
|5.||Canon SX410||none||n||3.0 / 230||fixed||n||1/4000s||0.5/s||Y||Y|
|6.||Canon SX610||none||n||3.0 / 922||fixed||n||1/2000s||2.5/s||Y||Y|
|7.||Canon SX710||none||n||3.0 / 922||fixed||n||1/3200s||6.0/s||Y||Y|
|8.||Canon SX60||922||n||3.0 / 922||swivel||n||1/2000s||6.4/s||Y||Y|
|9.||Canon G16||optical||n||3.0 / 922||fixed||n||1/4000s||2.2/s||Y||Y|
|10.||Canon S120||none||n||3.0 / 922||fixed||Y||1/2000s||12.1/s||Y||Y|
|11.||Canon SX50||202||n||3.0 / 461||swivel||n||1/2000s||2.2/s||Y||Y|
|12.||Canon G12||optical||n||2.8 / 461||swivel||n||1/4000s||1.1/s||Y||Y|
|13.||Fujifilm X20||optical||n||2.8 / 460||fixed||n||1/4000s||12.0/s||Y||Y|
|14.||Fujifilm X10||optical||n||2.8 / 460||fixed||n||1/4000s||10.0/s||Y||Y|
|15.||Nikon P7800||921||n||3.0 / 921||swivel||n||1/4000s||8.0/s||Y||Y|
|16.||Panasonic LX7||optional||n||3.0 / 920||fixed||n||1/4000s||11.0/s||Y||Y|
|17.||Panasonic FZ150||202||n||3.0 / 460||swivel||n||1/2000s||12.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
Both the G15 and the SX420 have zoom lenses built in. The G15 has a 28-140mm f/1.8-2.8 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 G15. The G15 offers the faster maximum aperture.
Concerning the storage of imaging data, both the G15 and the SX420 write their files to SDXC 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 G15 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 G15||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Canon SX420||-||mono / mono||-||-||-||2.0||Y||Y||-|
|3.||Canon SX430||-||mono / mono||-||-||-||2.0||Y||Y||-|
|4.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|5.||Canon SX410||-||stereo / mono||-||-||-||2.0||-||-||-|
|6.||Canon SX610||-||- / -||-||-||micro||2.0||Y||Y||-|
|7.||Canon SX710||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|8.||Canon SX60||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|9.||Canon G16||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|10.||Canon S120||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|11.||Canon SX50||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|12.||Canon G12||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|13.||Fujifilm X20||Y||stereo / mono||-||-||micro||2.0||-||-||-|
|14.||Fujifilm X10||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|15.||Nikon P7800||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|16.||Panasonic LX7||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|17.||Panasonic FZ150||Y||stereo / -||-||-||mini||2.0||-||-||-|
It is notable that the G15 has a hotshoe, while the SX420 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the G15 and the SX420 have been discontinued, but can regularly be found used on eBay. The G15 was replaced by the Canon G16, while the SX420 was followed by the Canon SX430. 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 G15 or the Canon SX420 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon PowerShot G15:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better jpgs: Has a more modern image processing engine (DIGIC 5 vs DIGIC 4+).
- Better video: Provides higher definition movie capture (1080/24p vs 720/25p).
- Easier framing: Has an optical viewfinder for image composition and settings control.
- More detailed LCD: Has a higher resolution rear screen (922k vs 230k dots).
- Faster burst: Shoots at higher frequency (2.1 vs 0.5 flaps/sec) to capture the decisive moment.
- Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/3.5).
- Longer lasting: Can take more shots (350 versus 195) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been available for much longer (launched in September 2012).
Arguments in favor of the Canon PowerShot SX420 IS:
- More detail: Has more megapixels (19.9 vs 12MP), which boosts linear resolution by 29%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- 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 compact: Is smaller (104x69mm vs 107x76mm) and will fit more readily into a bag.
- 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.
- More affordable: Was introduced into a lower priced category (40 percent cheaper at launch).
- More modern: Reflects 3 years and 3 months of technical progress since the G15 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the G15 comes out slightly ahead of the SX420 (10 : 9 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 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 G15 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 remains incomplete and does no justice, for example, to the way the G15 or the SX420 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 G15||4/5||+||..||76/100||4.5/5||4.5/5||Sep 2012||499|
|2.||Canon SX420||..||..||..||..||..||3/5||Jan 2016||299|
|3.||Canon SX430||..||..||..||..||3.5/5||3.5/5||Jan 2017||299|
|4.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399|
|5.||Canon SX410||..||o||..||..||..||..||Feb 2015||279|
|6.||Canon SX610||..||..||..||..||4/5||4/5||Jan 2015||249|
|7.||Canon SX710||..||+||..||..||4/5||3.5/5||Jan 2015||349|
|8.||Canon SX60||3/5||+ +||..||75/100||4/5||4.5/5||Sep 2014||549|
|9.||Canon G16||4/5||+||..||..||4.5/5||4.5/5||Aug 2013||549|
|10.||Canon S120||..||+ +||..||..||4.5/5||4.5/5||Aug 2013||449|
|11.||Canon SX50||3/5||+ +||..||72/100||4.5/5||4.5/5||Sep 2012||429|
|12.||Canon G12||4/5||+||..||73/100||4.5/5||4.5/5||Sep 2010||499|
|13.||Fujifilm X20||4/5||+ +||..||77/100||4.5/5||5/5||Jan 2013||599|
|14.||Fujifilm X10||..||..||..||76/100||4/5||4.5/5||Sep 2011||599|
|15.||Nikon P7800||3/5||..||..||..||4/5||4.5/5||Sep 2013||549|
|16.||Panasonic LX7||3/5||+ +||..||75/100||4/5||4.5/5||Jul 2012||499|
|17.||Panasonic FZ150||3/5||+ +||..||76/100||4/5||4.5/5||Aug 2011||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Canon G15 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 G15||Canon SX420|
|Camera Type||Fixed lens compact camera||Fixed lens compact camera|
|Camera Lens||28-140mm f/1.8-2.8||24-1008mm f/3.5-6.6|
|Launch Date||September 2012||January 2016|
|Launch Price||USD 499||USD 299|
|Sensor Specs||Canon G15||Canon SX420|
|Sensor Format||1/1.7" Sensor||1/2.3" Sensor|
|Sensor Size||7.6 x 5.7 mm||6.17 x 4.55 mm|
|Sensor Area||43.32 mm2||28.0735 mm2|
|Sensor Diagonal||9.5 mm||7.7 mm|
|Sensor Resolution||12 Megapixels||19.9 Megapixels|
|Image Resolution||4000 x 3000 pixels||5152 x 3864 pixels|
|Pixel Pitch||1.89 μm||1.19 μm|
|Pixel Density||27.70 MP/cm2||70.91 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/24p Video||720/25p Video|
|ISO Setting||80 - 12,800 ISO||100 - 1,600 ISO|
|Image Processor||DIGIC 5||DIGIC 4+|
|DXO Sensor Quality (score)||46||..|
|DXO Color Depth (bits)||19.9||..|
|DXO Dynamic Range (EV)||11.5||..|
|DXO Low Light (ISO)||165||..|
|Screen Specs||Canon G15||Canon SX420|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||80%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||922k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon G15||Canon SX420|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Continuous Shooting||2.1 shutter flaps/s||0.5 shutter flaps/s|
|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||no||no|
|Connectivity Specs||Canon G15||Canon SX420|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon G15||Canon SX420|
|Battery Life (CIPA)||350 shots per charge||195 shots per charge|
107 x 76 x 40 mm
(4.2 x 3.0 x 1.6 in)
104 x 69 x 85 mm
(4.1 x 2.7 x 3.3 in)
|Camera Weight||352 g (12.4 oz)||325 g (11.5 oz)|
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