Canon T6i vs Sony A7
The Canon EOS Rebel T6i (called Canon 750D in some regions) and the Sony Alpha A7 are two digital cameras that were revealed to the public, respectively, in February 2015 and October 2013. The T6i is a DSLR, while the A7 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (T6i) and a full frame (A7) sensor. Both cameras offer a resolution of 24 megapixels.
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 T6i and the Sony Alpha A7? 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 T6i and the Sony A7 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 A7 is notably smaller (10 percent) than the Canon T6i. Moreover, the A7 is markedly lighter (15 percent) than the T6i. It is noteworthy in this context that the A7 is splash and dust-proof, while the T6i 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 (T6i) and the Sony FE Lens Catalog (A7). Mirrorless cameras, such as the A7, 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 T6i gets 440 shots out of its LP-E17 battery, while the A7 can take 340 images on a single charge of its NP-FW50 power pack. The power pack in the A7 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 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 T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749|
|2.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699|
|3.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|4.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749|
|5.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|6.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449|
|7.||Canon T5i||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649|
|8.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|9.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|10.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|11.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|12.||Canon XT||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|13.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|14.||Sony A7S||127 mm||94 mm||48 mm||489 g||380||Y||Apr 2014||2,499|
|15.||Sony A7R||127 mm||94 mm||48 mm||465 g||340||Y||Oct 2013||2,299|
|16.||Sony RX1R||113 mm||65 mm||70 mm||482 g||270||n||Jun 2013||2,799|
|17.||Sony RX1||113 mm||65 mm||70 mm||482 g||270||n||Sep 2012||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 obviously take relative prices into account. 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 T6i was launched at a markedly lower price (by 56 percent) than the A7, 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. 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. 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. 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon T6i features an APS-C sensor and the Sony A7 a full frame sensor. The sensor area in the A7 is 158 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.
Even though the A7 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A7 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.97μm versus 3.72μm for the T6i), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the T6i is a somewhat more recent model (by 1 year and 3 months) than the A7, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
The Canon EOS Rebel T6i has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. Of the two cameras under consideration, the A7 offers substantially better image quality than the T6i (overall score 19 points higher). The advantage is based on 2.1 bits higher color depth, 2.2 EV in additional dynamic range, and 1.3 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 A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|13.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|14.||Sony A7S||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|15.||Sony A7R||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|16.||Sony RX1R||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|17.||Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7 provides a faster frame rate than the T6i. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7 has an electronic viewfinder (2400k dots), while the T6i 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 A7 offers a wider field of view (100%) than the one in the T6i (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7 has a higher magnification (0.71x vs 0.51x), 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 T6i, the Sony A7, and comparable cameras.
|1.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|2.||Sony A7||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||n|
|3.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|4.||Canon T7i||optical||n||3.0 / 1040||swivel||Y||1/4000s||6.0||Y||n|
|5.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|6.||Canon T5||optical||n||3.0 / 460||fixed||n||1/4000s||3.0||Y||n|
|7.||Canon T5i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|8.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0||Y||n|
|9.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4||Y||n|
|10.||Canon XSi||optical||n||3.0 / 230||fixed||n||1/4000s||3.5||Y||n|
|11.||Canon XTi||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|12.||Canon XT||optical||n||1.8 / 115||fixed||n||1/4000s||3.0||Y||n|
|13.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||Y|
|14.||Sony A7S||2400||n||3.0 / 921||tilting||n||1/8000s||5.0||n||n|
|15.||Sony A7R||2400||n||3.0 / 1230||tilting||n||1/8000s||4.0||n||n|
|16.||Sony RX1R||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0||Y||n|
|17.||Sony RX1||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 T6i has one, while the A7 does not. While the built-in flash of the T6i is not very powerful, it can at times be useful as a fill-in light.The T6i has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A7 does not have a selfie-screen.
The T6i writes its imaging data to SDXC cards, while the A7 uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 T6i and Sony Alpha A7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|2.||Sony A7||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|3.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|4.||Canon T7i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|6.||Canon T5||Y||mono / mono||-||-||mini||2.0||-||-||-|
|7.||Canon T5i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|8.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|9.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|10.||Canon XSi||Y||- / -||-||-||mini||2.0||-||-||-|
|11.||Canon XTi||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Canon XT||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|14.||Sony A7S||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony A7R||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony RX1R||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|17.||Sony RX1||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the A7 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The T6i lacks such a headphone port.
Both the T6i and the A7 have been discontinued, but can regularly be found used on eBay. The A7 was replaced by the Sony A7 II, while the T6i was followed by the Canon T7i. 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? Which of the two cameras – the Canon T6i or the Sony A7 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS Rebel T6i:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Longer lasting: Can take more shots (440 versus 340) 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 (56 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 1 year and 3 months after the A7).
Arguments in favor of the Sony Alpha A7:
- Better image quality: Scores substantially higher (19 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 low-light sensitivity: Can shoot in dim conditions (1.3 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- 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 0.51x).
- More detailed LCD: Has a higher resolution rear screen (1230k vs 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- More compact: Is smaller (127x94mm vs 132x101mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 81g or 15 percent) and is thus easier to take along.
- 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.
- More heavily discounted: Has been on the market for longer (launched in October 2013).
If the number of relative strengths (bullet points above) is taken as a guide, the A7 is the clear winner of the contest (17 : 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 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 T6i and the Sony A7 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the T6i and the A7 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 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 T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749|
|2.||Sony A7||5/5||+ +||..||80/100||5/5||5/5||Oct 2013||1,699|
|3.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899|
|4.||Canon T7i||4.5/5||..||3.5/5||80/100||4.5/5||4/5||Feb 2017||749|
|5.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649|
|6.||Canon T5||3/5||+||..||..||4/5||4.5/5||Feb 2014||449|
|7.||Canon T5i||..||..||..||76/100||4.5/5||4.5/5||Mar 2013||649|
|8.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849|
|9.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799|
|10.||Canon XSi||..||+ +||..||+ +||4/5||4.5/5||Jan 2008||799|
|11.||Canon XTi||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|12.||Canon XT||..||80/100||..||+ +||o||..||Feb 2005||899|
|13.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999|
|14.||Sony A7S||4/5||..||..||86/100||4.5/5||5/5||Apr 2014||2,499|
|15.||Sony A7R||5/5||+ +||..||82/100||4.5/5||5/5||Oct 2013||2,299|
|16.||Sony RX1R||5/5||..||..||..||4/5||4.5/5||Jun 2013||2,799|
|17.||Sony RX1||5/5||..||..||79/100||4/5||4.5/5||Sep 2012||2,799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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 comparisons of ratings among very different cameras or across long time periods 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 are interested in seeing how other cameras pair up, 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 T6i vs Sony A7
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 T6i||Sony A7|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Canon EF mount lenses||Sony E mount lenses|
|Launch Date||February 2015||October 2013|
|Launch Price||USD 749||USD 1,699|
|Sensor Specs||Canon T6i||Sony A7|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.3 x 14.9 mm||35.8 x 23.9 mm|
|Sensor Area||332.27 mm2||855.62 mm2|
|Sensor Diagonal||26.8 mm||43 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.72 μm||5.97 μm|
|Pixel Density||7.22 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||100 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 25,600 ISO||50 - 51,200 ISO|
|Image Processor||DIGIC 6||BIONZ X|
|DXO Sensor Quality (score)||71||90|
|DXO Color Depth (bits)||22.7||24.8|
|DXO Dynamic Range (EV)||12.0||14.2|
|DXO Low Light (ISO)||919||2248|
|Screen Specs||Canon T6i||Sony A7|
|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||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1230k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon T6i||Sony A7|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||5 shutter flaps/s|
|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||UHS-I||UHS-I|
|Connectivity Specs||Canon T6i||Sony A7|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Body Specs||Canon T6i||Sony A7|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||440 shots per charge||340 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
132 x 101 x 78 mm
(5.2 x 4.0 x 3.1 in)
127 x 94 x 48 mm
(5.0 x 3.7 x 1.9 in)
|Camera Weight||555 g (19.6 oz)||474 g (16.7 oz)|
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