Canon T3 vs Sony A7S
The Canon EOS Rebel T3 (called Canon 1100D in some regions) and the Sony Alpha A7S are two digital cameras that were announced, respectively, in February 2011 and April 2014. The T3 is a DSLR, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (T3) and a full frame (A7S) sensor. The Canon has a resolution of 12.2 megapixels, whereas the Sony provides 12 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 A7S? 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 physical size and weight of the Canon T3 and the Sony A7S are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures 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 A7S is notably smaller (8 percent) than the Canon T3. Moreover, the A7S is slightly lighter (1 percent) than the T3. It is noteworthy in this context that the A7S 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (T3) and the Sony FE Lens Catalog (A7S). Mirrorless cameras, such as the A7S, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.
Concerning battery life, the T3 gets 700 shots out of its LP-E10 battery, while the A7S can take 380 images on a single charge of its NP-FW50 power pack. The power pack in the A7S can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|2.||Sony A7S||127 mm||94 mm||48 mm||489 g||380||Y||Apr 2014||2,499|
|3.||Canon T100||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399|
|4.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449|
|5.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799|
|6.||Canon SX50||123 mm||87 mm||106 mm||595 g||315||n||Sep 2012||429|
|7.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|8.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599|
|9.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|10.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449|
|11.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|12.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|13.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299|
|14.||Sony A7S II||127 mm||96 mm||60 mm||627 g||370||Y||Sep 2015||2,999|
|15.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699|
|16.||Sony A7R||127 mm||94 mm||48 mm||465 g||340||Y||Oct 2013||2,299|
|17.||Sony RX1R||113 mm||65 mm||70 mm||482 g||270||n||Jun 2013||2,799|
|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 T3 was launched at a markedly lower price (by 82 percent) than the A7S, 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon T3 features an APS-C sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 165 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the Canon T3 offers a higher resolution of 12.2 megapixels, compared with 12 MP of the Sony A7S. 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 5.15μm versus 8.45μm for the A7S). Moreover, it should be noted that the A7S is much more recent (by 3 years and 1 month) than the T3, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The Canon EOS Rebel T3 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.
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"). Of the two cameras under consideration, the A7S offers substantially better image quality than the T3 (overall score 25 points higher). The advantage is based on 2 bits higher color depth, 2.2 EV in additional dynamic range, and 2.3 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.
|2.||Sony A7S||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|5.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|13.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|14.||Sony A7S II||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|15.||Sony A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|16.||Sony A7R||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|17.||Sony RX1R||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|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 A7S provides a better video resolution than the T3. It can shoot movie footage at 1080/60p, while the Canon is limited to 720/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7S has an electronic viewfinder (2400k 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 A7S 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 A7S has a higher magnification (0.71x vs 0.50x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon T3, the Sony A7S, and comparable cameras.
|1.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0||Y||n|
|2.||Sony A7S||2400||n||3.0 / 921||tilting||n||1/8000s||5.0||n||n|
|3.||Canon T100||optical||n||2.7 / 230||fixed||n||1/4000s||3.0||Y||n|
|4.||Canon T5||optical||n||3.0 / 460||fixed||n||1/4000s||3.0||Y||n|
|5.||Canon G1 X||optical||n||3.0 / 922||swivel||n||1/4000s||1.9||Y||Y|
|6.||Canon SX50||202||n||3.0 / 461||swivel||n||1/2000s||2.2||Y||Y|
|7.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|8.||Canon T3i||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7||Y||n|
|9.||Canon T2i||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7||Y||n|
|10.||Canon XS||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|11.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5||Y||n|
|12.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|13.||Nikon D750||optical||Y||3.2 / 1229||tilting||n||1/4000s||6.0||Y||n|
|14.||Sony A7S II||2400||n||3.0 / 1229||tilting||n||1/8000s||5.0||n||Y|
|15.||Sony A7||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||n|
|16.||Sony A7R||2400||n||3.0 / 1230||tilting||n||1/8000s||4.0||n||n|
|17.||Sony RX1R||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0||Y||n|
One difference between the cameras concerns the presence of an on-board flash. The T3 has one, while the A7S does not. While the built-in flash of the T3 is not very powerful, it can at times be useful as a fill-in light.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7S is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The T3 writes its imaging data to SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The A7S 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 A7S 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 A7S||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|3.||Canon T100||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon T5||Y||mono / mono||-||-||mini||2.0||-||-||-|
|5.||Canon G1 X||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|6.||Canon SX50||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.||Nikon D750||Y||stereo / mono||Y||Y||mini||2.0||Y||-||-|
|14.||Sony A7S II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony A7||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony A7R||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|17.||Sony RX1R||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the A7S offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the T3 does not provide wifi capability.
Both the T3 and the A7S have been discontinued, but can regularly be found used on eBay. The T3 was replaced by the Canon T5, while the A7S was followed by the Sony A7S 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 conclusions can be drawn? Is there a clear favorite between the Canon T3 and the Sony A7S? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Canon EOS Rebel T3:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Longer lasting: Can take more shots (700 versus 380) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (82 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in February 2011).
Arguments in favor of the Sony Alpha A7S:
- Better image quality: Scores substantially higher (25 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (2.3 stops ISO advantage).
- 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.
- Better sound control: Has a headphone port that enables audio monitoring while 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 (0.71x vs 0.50x).
- 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 tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- 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 modern: Reflects 3 years and 1 month of technical progress since the T3 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the A7S is the clear winner of the contest (23 : 5 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 T3 and the Sony A7S place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the T3 or the A7S. 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 why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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|
|2.||Sony A7S||4/5||..||..||86/100||4.5/5||5/5||Apr 2014||2,499|
|3.||Canon T100||..||o||3/5||..||3.5/5||3.5/5||Feb 2018||399|
|4.||Canon T5||3/5||+||..||..||4/5||4.5/5||Feb 2014||449|
|5.||Canon G1 X||5/5||+||..||76/100||4/5||4.5/5||Jan 2012||799|
|6.||Canon SX50||3/5||+ +||..||72/100||4.5/5||4.5/5||Sep 2012||429|
|7.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|8.||Canon T3i||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599|
|9.||Canon T2i||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699|
|10.||Canon XS||..||82/100||..||+ +||3.5/5||4.5/5||Jun 2008||449|
|11.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|12.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|13.||Nikon D750||5/5||+ +||4/5||90/100||4.5/5||4.5/5||Sep 2014||2,299|
|14.||Sony A7S II||5/5||+||..||..||4.5/5||5/5||Sep 2015||2,999|
|15.||Sony A7||5/5||+ +||..||80/100||5/5||5/5||Oct 2013||1,699|
|16.||Sony A7R||5/5||+ +||..||82/100||4.5/5||5/5||Oct 2013||2,299|
|17.||Sony RX1R||5/5||..||..||..||4/5||4.5/5||Jun 2013||2,799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods 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? 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 T3 vs Sony A7S
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 A7S|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Sony E mount lenses|
|Launch Date||February 2011||April 2014|
|Launch Price||USD 449||USD 2,499|
|Sensor Specs||Canon T3||Sony A7S|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.0 x 14.7 mm||35.8 x 23.9 mm|
|Sensor Area||323.4 mm2||855.62 mm2|
|Sensor Diagonal||26.5 mm||43 mm|
|Sensor Resolution||12.2 Megapixels||12 Megapixels|
|Image Resolution||4272 x 2848 pixels||4240 x 2832 pixels|
|Pixel Pitch||5.15 μm||8.45 μm|
|Pixel Density||3.76 MP/cm2||1.40 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 - 102,400 ISO|
|ISO Boost||no Enhancement||50 - 409,600 ISO|
|Image Processor||DIGIC 4||BIONZ X|
|DXO Sensor Quality (score)||62||87|
|DXO Color Depth (bits)||21.9||23.9|
|DXO Dynamic Range (EV)||11.0||13.2|
|DXO Low Light (ISO)||755||3702|
|Screen Specs||Canon T3||Sony A7S|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2400k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||2.7inch||3.0inch|
|LCD Resolution||230k dots||921k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon T3||Sony A7S|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||3 shutter flaps/s||5 shutter flaps/s|
|Electronic Shutter||no E-Shutter||YES|
|Fill Flash||Built-in Flash||no On-Board 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 T3||Sony A7S|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon T3||Sony A7S|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||700 shots per charge||380 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
130 x 100 x 78 mm
(5.1 x 3.9 x 3.1 in)
127 x 94 x 48 mm
(5.0 x 3.7 x 1.9 in)
|Camera Weight||495 g (17.5 oz)||489 g (17.2 oz)|
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