Canon T3 vs Sony A77
The Canon EOS Rebel T3 (called Canon 1100D in some regions) and the Sony Alpha SLT-A77 are two digital cameras that were officially introduced, respectively, in February 2011 and August 2011. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 12.2 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 EOS Rebel T3 and the Sony Alpha SLT-A77? 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 T3 and the Sony A77 is provided in the side-by-side display below. 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 size 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 is notably larger (14 percent) than the Canon T3. Moreover, the A77 is substantially heavier (48 percent) than the T3. It is noteworthy in this context that the A77 is splash and dust-proof, while the T3 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449||ebay.com|
|2.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399||ebay.com|
|3.||Canon T100||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399||amazon.com|
|4.||Canon T6||129 mm||101 mm||78 mm||485 g||500||n||Mar 2016||449||ebay.com|
|5.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||ebay.com|
|6.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799||ebay.com|
|7.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|8.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||ebay.com|
|9.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||ebay.com|
|10.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449||ebay.com|
|11.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799||ebay.com|
|12.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799||ebay.com|
|13.||Panasonic GH5||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999||ebay.com|
|14.||Sony A9||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||ebay.com|
|15.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||ebay.com|
|16.||Sony A77 II||143 mm||104 mm||81 mm||647 g||480||Y||May 2014||1,199||ebay.com|
|17.||Sony A99||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799||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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T3 was launched at a markedly lower price (by 68 percent) than the A77, 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A77 is 14 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (T3) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24MP, the A77 offers a higher resolution than the T3 (12.2MP), but the A77 has smaller individual pixels (pixel pitch of 3.91μm versus 5.15μm for the T3). Yet, the A77 is a somewhat more recent model (by 6 months) than the T3, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A77 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 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 T3 are 21.4 x 14.2 inches or 54.3 x 36.2 cm for good quality, 17.1 x 11.4 inches or 43.4 x 28.9 cm for very good quality, and 14.2 x 9.5 inches or 36.2 x 24.1 cm for excellent quality prints.
The Canon EOS Rebel T3 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Sony Alpha SLT-A77 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 50-25600.
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 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 A77 offers substantially better image quality than the T3 (overall score 16 points higher). The advantage is based on 2.1 bits higher color depth, 2.2 EV in additional dynamic range, and 0.1 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|6.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|13.||Panasonic GH5||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77|
|14.||Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|15.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|16.||Sony A77 II||APS-C||24.0||6000||4000||1080/60p||24.4||13.4||1013||82|
|17.||Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A77 provides a better video resolution than the T3. It can shoot movie footage at 1080/60p, while the Canon is limited to 720/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A77 has an electronic viewfinder (2359k dots), while the T3 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 viewfinder in the A77 offers a wider field of view (100%) than the one in the T3 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A77 has a higher magnification (0.73x vs 0.50x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon T3 and Sony A77 along with similar information for a selection of comparators.
|1.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|2.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0/s||Y||Y|
|3.||Canon T100||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|4.||Canon T6||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|5.||Canon T5||optical||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||n|
|6.||Canon G1 X||optical||n||3.0 / 922||swivel||n||1/4000s||1.9/s||Y||Y|
|7.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|8.||Canon T3i||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7/s||Y||n|
|9.||Canon T2i||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7/s||Y||n|
|10.||Canon XS||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5/s||Y||n|
|12.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|13.||Panasonic GH5||3680||n||3.2 / 1620||swivel||Y||1/8000s||12.0/s||n||Y|
|14.||Sony A9||3686||n||3.0 / 1440||tilting||Y||1/8000s||20.0/s||n||Y|
|15.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||Y|
|16.||Sony A77 II||2359||Y||3.0 / 1229||full-flex||n||1/8000s||12.0/s||Y||Y|
|17.||Sony A99||2359||Y||3.0 / 1229||full-flex||n||1/8000s||6.0/s||n||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the A77 and the T3 is in-body image stabilization (IBIS). The A77 reduces the risk of handshake-induced blur with all attached lenses, while the T3 offers no blur reduction with lenses that themselves do not provide optical image stabilization.The A77 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 T3 does not have a selfie-screen.
The T3 writes its imaging data to SDXC cards, while the A77 uses SDXC or Memory Stick PRO Duo cards. The A77 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the T3 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 EOS Rebel T3 and Sony Alpha SLT-A77 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon T3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Canon T100||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon T6||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|5.||Canon T5||Y||mono / mono||-||-||mini||2.0||-||-||-|
|6.||Canon G1 X||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|8.||Canon T3i||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|9.||Canon T2i||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|10.||Canon XS||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|12.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Panasonic GH5||Y||stereo / mono||Y||Y||full||3.1||Y||-||Y|
|14.||Sony A9||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
|15.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony A77 II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|17.||Sony A99||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
It is notable that the A77 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The T3 does not feature such a mic input.
Studio photographers will appreciate that the Sony A77 (unlike the T3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the A77 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the T3 and the A77 have been discontinued, but can regularly be found used on ebay. The T3 was replaced by the Canon T5, while the A77 was followed by the Sony A77 II. Further information on the features and operation of the T3 and A77 can be found, respectively, in the Canon T3 Manual (free pdf) or the online Sony A77 Manual.
So what conclusions can be drawn? Is there a clear favorite between the Canon T3 and the Sony A77? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon EOS Rebel T3:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More compact: Is smaller (130x100mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 237g or 32 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (700 versus 470) on a single battery charge.
- More affordable: Was introduced into a lower priced category (68 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in February 2011).
Arguments in favor of the Sony Alpha SLT-A77:
- More detail: Has more megapixels (24 vs 12.2MP), which boosts linear resolution by 40%.
- Better image quality: Scores substantially higher (16 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.1 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
- Better video: Provides higher definition movie capture (1080/60p vs 720/30p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.73x vs 0.50x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- 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 (921k vs 230k 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 3 flaps/sec) to capture the decisive moment.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- 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 (6 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the A77 is the clear winner of the contest (22 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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 T3 and the Sony A77 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 remains incomplete and does no justice, for example, to the way the T3 or the A77 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is where reviews by experts come in. 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 T3||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449||ebay.com|
|2.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399||ebay.com|
|3.||Canon T100||..||o||3/5||..||3.5/5||3.5/5||Feb 2018||399||amazon.com|
|4.||Canon T6||4/5||o||4/5||73/100||4/5||4/5||Mar 2016||449||ebay.com|
|5.||Canon T5||3/5||+||..||..||4/5||4.5/5||Feb 2014||449||ebay.com|
|6.||Canon G1 X||5/5||+||..||76/100||4/5||4.5/5||Jan 2012||799||ebay.com|
|7.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|8.||Canon T3i||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599||ebay.com|
|9.||Canon T2i||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699||ebay.com|
|10.||Canon XS||..||82/100||..||+ +||3.5/5||4.5/5||Jun 2008||449||ebay.com|
|11.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799||ebay.com|
|12.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799||ebay.com|
|13.||Panasonic GH5||4.5/5||+ +||..||85/100||4.5/5||5/5||Jan 2017||1,999||ebay.com|
|14.||Sony A9||5/5||+ +||4.8/5||89/100||5/5||5/5||Apr 2017||4,499||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 A77 II||4/5||..||..||80/100||4.5/5||5/5||May 2014||1,199||ebay.com|
|17.||Sony A99||5/5||..||..||84/100||4.5/5||4.5/5||Sep 2012||2,799||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 are interested in seeing how other cameras pair up, just make your choice using the following search menu. 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 T3 vs Sony A77
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 T3||Sony A77|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Sony A mount lenses|
|Launch Date||February 2011||August 2011|
|Launch Price||USD 449||USD 1,399|
|Sensor Specs||Canon T3||Sony A77|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.0 x 14.7 mm||23.5 x 15.6 mm|
|Sensor Area||323.4 mm2||366.6 mm2|
|Sensor Diagonal||26.5 mm||28.2 mm|
|Sensor Resolution||12.2 Megapixels||24 Megapixels|
|Image Resolution||4272 x 2848 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.15 μm||3.91 μm|
|Pixel Density||3.76 MP/cm2||6.55 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||720/30p Video||1080/60p Video|
|ISO Setting||100 - 6,400 ISO||100 - 16,000 ISO|
|ISO Boost||no Enhancement||50 - 25,600 ISO|
|Image Processor||DIGIC 4||BIONZ X|
|DXO Sensor Quality (score)||62||78|
|DXO Color Depth (bits)||21.9||24.0|
|DXO Dynamic Range (EV)||11.0||13.2|
|DXO Low Light (ISO)||755||801|
|Screen Specs||Canon T3||Sony A77|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2359k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||2.7inch||3.0inch|
|LCD Resolution||230k dots||921k dots|
|LCD Attachment||Fixed screen||Fully flexible screen|
|Shooting Specs||Canon T3||Sony A77|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||3 shutter flaps/s||12 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||150 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon T3||Sony A77|
|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||no Wifi|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Canon T3||Sony A77|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||700 shots per charge||470 shots per charge|
130 x 100 x 78 mm
(5.1 x 3.9 x 3.1 in)
143 x 104 x 81 mm
(5.6 x 4.1 x 3.2 in)
|Camera Weight||495 g (17.5 oz)||732 g (25.8 oz)|
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