Canon G15 vs SX620
The Canon PowerShot G15 and the Canon PowerShot SX620 HS are two digital cameras that were officially introduced, respectively, in September 2012 and May 2016. Both the G15 and the SX620 are fixed lens compact cameras that are based on a 1/1.7-inch (G15) and a 1/2.3-inch (SX620) sensor. The G15 has a resolution of 12 megapixels, whereas the SX620 provides 20.2 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 SX620 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.
The side-by-side display below illustrates the physical size and weight of the Canon G15 and the Canon SX620. 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 measures are rounded to the nearest millimeter.
The SX620 can be obtained in three different colors (black, silver, 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 SX620 is considerably smaller (32 percent) than the Canon G15. Moreover, the SX620 is substantially lighter (48 percent) than the G15. In this context, it is worth noting that neither the G15 nor the SX620 are weather-sealed.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
|Canon G15||107 mm||76 mm||40 mm||352 g||350||n||Sep 2012||499|
|Canon SX620||97 mm||57 mm||28 mm||182 g||295||n||May 2016||279|
|Canon G9 X Mark II||98 mm||58 mm||31 mm||206 g||235||n||Jan 2017||529|
|Canon SX420||104 mm||69 mm||85 mm||325 g||195||n||Jan 2016||299|
|Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529|
|Canon SX410||104 mm||69 mm||85 mm||325 g||185||n||Feb 2015||279|
|Canon SX610||105 mm||61 mm||27 mm||191 g||270||n||Jan 2015||249|
|Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549|
|Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|Canon G12||112 mm||76 mm||48 mm||401 g||370||n||Sep 2010||499|
|Fujifilm X20||117 mm||70 mm||57 mm||353 g||270||n||Jan 2013||599|
|Fujifilm X10||117 mm||70 mm||57 mm||350 g||270||n||Sep 2011||599|
|Nikon P7800||119 mm||78 mm||50 mm||399 g||350||n||Sep 2013||549|
|Panasonic LX7||111 mm||68 mm||46 mm||298 g||330||n||Jul 2012||499|
|Panasonic FZ150||124 mm||82 mm||92 mm||528 g||410||n||Aug 2011||499|
|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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX620 was launched at a markedly lower price (by 44 percent) than the G15, 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 G15 features a 1/1.7-inch sensor and the Canon SX620 a 1/2.3-inch sensor. The sensor area in the SX620 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 SX620 (DIGIC 4+), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the SX620 offers a higher resolution of 20.2 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 1.18μm versus 1.89μm for the G15). However, it should be noted that the SX620 is much more recent (by 3 years and 7 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 SX620 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon SX620 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX620 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 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 SX620 HS are ISO 80 to ISO 3200 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
| DXO |
|Canon G9 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
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 SX620 provides a faster frame rate than the G15. It can shoot movie footage at 1080/30p, while the G15 is limited to 1080/24p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the G15 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX620 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon G15 and Canon SX620 in connection with corresponding information for a sample of similar cameras.
|Canon G9 X Mark II||none||n||3.0||1040||fixed||Y||1/2000s||8.2||Y||Y|
|Canon G9 X||none||n||3.0||1040||fixed||Y||1/2000s||6.0||Y||Y|
Both the G15 and the SX620 have zoom lenses built in. The G15 has a 28-140mm f/1.8-2.8 optic and the SX620 offers a 25-625mm f/3.2-6.6 (focal lengths in full frame equivalent terms). Hence, the SX620 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 SX620 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 SX620 HS and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|Canon G9 X Mark II||-||stereo||mono||-||-||micro||2.0||Y||Y||Y|
|Canon G9 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
It is notable that the G15 has a hotshoe, while the SX620 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
The SX620 is a recent model that features in the current product line-up of Canon. In contrast, the G15 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the G15 was succeeded by the Canon G16. 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? Is the Canon G15 better than the Canon SX620 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
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+).
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/3.2).
- Longer lasting: Can take more shots (350 versus 295) 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).
Advantages of the Canon PowerShot SX620 HS:
- More detail: Has more megapixels (20.2 vs 12MP), which boosts linear resolution by 30%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
- Faster burst: Shoots at higher frequency (2.5 vs 2.1 flaps/sec) to capture the decisive moment.
- 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 (97x57mm vs 107x76mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 170g or 48 percent) and is thus easier to take along.
- 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 (44 percent cheaper at launch).
- More modern: Reflects 3 years and 7 months of technical progress since the G15 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the SX620 is the clear winner of the contest (12 : 8 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 SX620 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the G15 and the SX620 in practical situations. 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 (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 G15||+||76/100||4.5/5||4.5/5||4.5/5||Sep 2012||499|
|Canon SX620||..||..||..||..||4/5||May 2016||279|
|Canon G9 X Mark II||..||75/100||4.5/5||4.5/5||4.5/5||Jan 2017||529|
|Canon SX420||..||..||..||..||3/5||Jan 2016||299|
|Canon G9 X||+ +||..||4.5/5||4/5||4.5/5||Oct 2015||529|
|Canon SX410||o||..||..||..||..||Feb 2015||279|
|Canon SX610||..||..||4/5||..||4/5||Jan 2015||249|
|Canon SX60||+ +||75/100||4/5||..||4.5/5||Sep 2014||549|
|Canon G16||+||..||4.5/5||4.5/5||4.5/5||Aug 2013||549|
|Canon S120||+ +||..||4.5/5||o||4.5/5||Aug 2013||449|
|Canon SX50||+ +||72/100||4.5/5||..||4.5/5||Sep 2012||429|
|Canon G12||+||73/100||4.5/5||4.5/5||4.5/5||Sep 2010||499|
|Fujifilm X20||+ +||77/100||4.5/5||..||5/5||Jan 2013||599|
|Fujifilm X10||..||76/100||4/5||3.5/5||4.5/5||Sep 2011||599|
|Nikon P7800||..||..||4/5||3.5/5||4.5/5||Sep 2013||549|
|Panasonic LX7||+ +||75/100||4/5||5/5||4.5/5||Jul 2012||499|
|Panasonic FZ150||+ +||76/100||4/5||5/5||4.5/5||Aug 2011||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Canon G15 vs Canon SX620
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 SX620|
|Camera Type||Fixed lens compact camera||Fixed lens compact camera|
|Camera Lens||28-140mm f/1.8-2.8||25-625mm f/3.2-6.6|
|Launch Date||September 2012||May 2016|
|Launch Price||USD 499||USD 279|
|Sensor Specs||Canon G15||Canon SX620|
|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||20.2 Megapixels|
|Image Resolution||4000 x 3000 pixels||5184 x 3888 pixels|
|Pixel Pitch||1.89 μm||1.18 μm|
|Pixel Density||27.70 MP/cm2||71.80 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/24p Video||1080/30p Video|
|ISO Setting||80 - 12,800 ISO||80 - 3,200 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 SX620|
|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||922k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon G15||Canon SX620|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Continuous Shooting||2.1 shutter flaps/s||2.5 shutter flaps/s|
|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||no||no|
|Connectivity Specs||Canon G15||Canon SX620|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon G15||Canon SX620|
|Battery Life (CIPA)||350 shots per charge||295 shots per charge|
107 x 76 x 40 mm
(4.2 x 3.0 x 1.6 in)
97 x 57 x 28 mm
(3.8 x 2.2 x 1.1 in)
|Camera Weight||352 g (12.4 oz)||182 g (6.4 oz)|
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