Canon G15 vs Sony A77 II
The Canon PowerShot G15 and the Sony Alpha SLT-A77 II are two digital cameras that were officially introduced, respectively, in September 2012 and May 2014. The G15 is a fixed lens compact, while the A77 II is a DSLR. The cameras are based on a 1/1.7-inch (G15) and an APS-C (A77 II) sensor. The Canon has a resolution of 12 megapixels, whereas the Sony provides 24 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 Sony Alpha SLT-A77 II? 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 Sony A77 II. 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A77 II is considerably larger (83 percent) than the Canon G15. It is noteworthy in this context that the A77 II is splash and dust-proof, while the G15 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G15 has a lens built in, whereas the A77 II is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
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 G15||107 mm||76 mm||40 mm||352 g||350||n||Sep 2012||499||ebay.com|
|2.||Sony A77 II||143 mm||104 mm||81 mm||647 g||480||Y||May 2014||1,199||ebay.com|
|3.||Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549||ebay.com|
|4.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549||ebay.com|
|5.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449||ebay.com|
|6.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429||ebay.com|
|7.||Canon G12||112 mm||76 mm||48 mm||401 g||370||n||Sep 2010||499||ebay.com|
|8.||Fujifilm X20||117 mm||70 mm||57 mm||353 g||270||n||Jan 2013||599||ebay.com|
|9.||Fujifilm X10||117 mm||70 mm||57 mm||350 g||270||n||Sep 2011||599||ebay.com|
|10.||Nikon D7200||136 mm||107 mm||76 mm||765 g||1110||Y||Mar 2015||1,199||ebay.com|
|11.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199||ebay.com|
|12.||Nikon P7800||119 mm||78 mm||50 mm||399 g||350||n||Sep 2013||549||ebay.com|
|13.||Panasonic LX7||111 mm||68 mm||46 mm||298 g||330||n||Jul 2012||499||ebay.com|
|14.||Panasonic FZ150||124 mm||82 mm||92 mm||528 g||410||n||Aug 2011||499||ebay.com|
|15.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699||ebay.com|
|16.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||ebay.com|
|17.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399||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 obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G15 was launched at a lower price than the A77 II, 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 size of the sensor inside a digital camera is one of the key determinants 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. 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 G15 features a 1/1.7-inch sensor and the Sony A77 II an APS-C sensor. The sensor area in the A77 II is 753 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 4.6 and 1.5. The sensor in the G15 has a native 4:3 aspect ratio, while the one in the A77 II offers a 3:2 aspect.
With 24MP, the A77 II offers a higher resolution than the G15 (12MP), but the A77 II nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 1.89μm for the G15) due to its larger sensor. Moreover, the A77 II is a somewhat more recent model (by 1 year and 7 months) than the G15, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A77 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 II for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 Sony Alpha SLT-A77 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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.
|2.||Sony A77 II||APS-C||24.0||6000||4000||1080/60p||23.5||12.7||1442||77|
|16.||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 can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A77 II provides a faster frame rate than the G15. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/24p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A77 II has an electronic viewfinder (2359k dots), while the G15 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The following table reports on some other key feature differences and similarities of the Canon G15, the Sony A77 II, and comparable cameras.
|1.||Canon G15||optical||n||3.0 / 922||fixed||n||1/4000s||2.1/s||Y||Y|
|2.||Sony A77 II||2359||Y||3.0 / 1229||full-flex||n||1/8000s||12.0/s||Y||Y|
|3.||Canon SX60||922||n||3.0 / 922||swivel||n||1/2000s||6.4/s||Y||Y|
|4.||Canon G16||optical||n||3.0 / 922||fixed||n||1/4000s||2.2/s||Y||Y|
|5.||Canon S120||none||n||3.0 / 922||fixed||Y||1/2000s||12.1/s||Y||Y|
|6.||Canon SX50||202||n||3.0 / 461||swivel||n||1/2000s||2.2/s||Y||Y|
|7.||Canon G12||optical||n||2.8 / 461||swivel||n||1/4000s||1.1/s||Y||Y|
|8.||Fujifilm X20||optical||n||2.8 / 460||fixed||n||1/4000s||12.0/s||Y||Y|
|9.||Fujifilm X10||optical||n||2.8 / 460||fixed||n||1/4000s||10.0/s||Y||Y|
|10.||Nikon D7200||optical||Y||3.2 / 1229||fixed||n||1/8000s||6.0/s||Y||n|
|11.||Nikon D7100||optical||Y||3.2 / 1229||fixed||n||1/8000s||6.0/s||Y||n|
|12.||Nikon P7800||921||n||3.0 / 921||swivel||n||1/4000s||8.0/s||Y||Y|
|13.||Panasonic LX7||optional||n||3.0 / 920||fixed||n||1/4000s||11.0/s||Y||Y|
|14.||Panasonic FZ150||202||n||3.0 / 460||swivel||n||1/2000s||12.0/s||Y||Y|
|15.||Sony A68||1440||Y||2.7 / 460||tilting||n||1/4000s||8.0/s||Y||Y|
|16.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||Y|
|17.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the A77 II, but is missing on the G15 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.The A77 II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the G15 does not have a selfie-screen.
The G15 writes its imaging data to SDXC cards, while the A77 II uses SDXC or Memory Stick PRO Duo cards. The A77 II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the G15 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 G15 and Sony Alpha SLT-A77 II 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.||Sony A77 II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|3.||Canon SX60||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|4.||Canon G16||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|5.||Canon S120||-||stereo / mono||-||-||mini||2.0||Y||-||-|
|6.||Canon SX50||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Canon G12||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|8.||Fujifilm X20||Y||stereo / mono||-||-||micro||2.0||-||-||-|
|9.||Fujifilm X10||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|10.||Nikon D7200||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|11.||Nikon D7100||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
|12.||Nikon P7800||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|13.||Panasonic LX7||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|14.||Panasonic FZ150||Y||stereo / -||-||-||mini||2.0||-||-||-|
|15.||Sony A68||Y||stereo / mono||Y||-||micro||2.0||-||-||-|
|16.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|17.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the A77 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the G15 does not provide wifi capability.
Studio photographers will appreciate that the Sony A77 II (unlike the G15) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the G15 and the A77 II have been discontinued, but can regularly be found used on ebay. The G15 was replaced by the Canon G16, while the A77 II does not have a direct successor. Further information on the features and operation of the G15 and A77 II can be found, respectively, in the Canon G15 Manual (free pdf) or the online Sony A77 II Manual.
So what conclusions can be drawn? Which of the two cameras – the Canon G15 or the Sony A77 II – 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:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Ready to shoot: Comes with a built-in lens, while the A77 II requires a separate lens.
- More compact: Is smaller (107x76mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the A77 II).
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been on the market for longer (launched in September 2012).
Arguments in favor of the Sony Alpha SLT-A77 II:
- More detail: Has more megapixels (24 vs 12MP), which boosts linear resolution by 44%.
- Better image quality: Is equipped with a larger and more technologically advanced 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 video: Provides higher movie framerates (1080/60p versus 1080/24p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 922k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 2.1 flaps/sec) to capture the decisive moment.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (480 versus 350) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Was introduced somewhat (1 year and 7 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the A77 II is the clear winner of the contest (22 : 6 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 Sony A77 II 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 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 A77 II 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 where reviews by experts come in. 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 G15||4/5||+||..||76/100||4.5/5||4.5/5||Sep 2012||499||ebay.com|
|2.||Sony A77 II||4/5||..||..||80/100||4.5/5||5/5||May 2014||1,199||ebay.com|
|3.||Canon SX60||3/5||+ +||..||75/100||4/5||4.5/5||Sep 2014||549||ebay.com|
|4.||Canon G16||4/5||+||..||..||4.5/5||4.5/5||Aug 2013||549||ebay.com|
|5.||Canon S120||..||+ +||..||..||4.5/5||4.5/5||Aug 2013||449||ebay.com|
|6.||Canon SX50||3/5||+ +||..||72/100||4.5/5||4.5/5||Sep 2012||429||ebay.com|
|7.||Canon G12||4/5||+||..||73/100||4.5/5||4.5/5||Sep 2010||499||ebay.com|
|8.||Fujifilm X20||4/5||+ +||..||77/100||4.5/5||5/5||Jan 2013||599||ebay.com|
|9.||Fujifilm X10||..||..||..||76/100||4/5||4.5/5||Sep 2011||599||ebay.com|
|10.||Nikon D7200||4/5||+ +||..||84/100||4.5/5||4.5/5||Mar 2015||1,199||ebay.com|
|11.||Nikon D7100||5/5||+ +||..||85/100||4.5/5||4.5/5||Feb 2013||1,199||ebay.com|
|12.||Nikon P7800||3/5||..||..||..||4/5||4.5/5||Sep 2013||549||ebay.com|
|13.||Panasonic LX7||3/5||+ +||..||75/100||4/5||4.5/5||Jul 2012||499||ebay.com|
|14.||Panasonic FZ150||3/5||+ +||..||76/100||4/5||4.5/5||Aug 2011||499||ebay.com|
|15.||Sony A68||3/5||..||..||..||4/5||4/5||Nov 2015||699||ebay.com|
|16.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999||ebay.com|
|17.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399||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, 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? 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 G15 vs Sony A77 II
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||Sony A77 II|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||28-140mm f/1.8-2.8||Sony A mount lenses|
|Launch Date||September 2012||May 2014|
|Launch Price||USD 499||USD 1,199|
|Sensor Specs||Canon G15||Sony A77 II|
|Sensor Format||1/1.7" Sensor||APS-C Sensor|
|Sensor Size||7.6 x 5.7 mm||23.5 x 15.6 mm|
|Sensor Area||43.32 mm2||366.6 mm2|
|Sensor Diagonal||9.5 mm||28.2 mm|
|Sensor Resolution||12 Megapixels||24 Megapixels|
|Image Resolution||4000 x 3000 pixels||6000 x 4000 pixels|
|Pixel Pitch||1.89 μm||3.91 μm|
|Pixel Density||27.70 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/24p Video||1080/60p Video|
|ISO Setting||80 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||no Enhancement||50 - 51,200 ISO|
|Image Processor||DIGIC 5||BIONZ X|
|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||Sony A77 II|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||80%||100%|
|Viewfinder Resolution||2359k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||922k dots||1229k dots|
|LCD Attachment||Fixed screen||Fully flexible screen|
|Shooting Specs||Canon G15||Sony A77 II|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||2.1 shutter flaps/s||12 shutter flaps/s|
|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||no||UHS-I|
|Connectivity Specs||Canon G15||Sony A77 II|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon G15||Sony A77 II|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||350 shots per charge||480 shots per charge|
107 x 76 x 40 mm
(4.2 x 3.0 x 1.6 in)
143 x 104 x 81 mm
(5.6 x 4.1 x 3.2 in)
|Camera Weight||352 g (12.4 oz)||647 g (22.8 oz)|
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