Sony A7R II versus Canon T6i
The Sony Alpha A7R II and the Canon EOS Rebel T6i (labelled Canon 750D in some countries) are two digital cameras that were officially introduced, respectively, in June 2015 and February 2015. The A7R II is a mirrorless interchangeable lens camera, while the T6i is a DSLR. The cameras are based on a full frame (A7R II) and an APS-C (T6i) sensor. The Sony has a resolution of 42.2 megapixel, whereas the Canon provides 24 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.
Body comparison: Sony A7R II vs Canon T6i
An illustration of the physical size and weight of the Sony A7R II and the Canon T6i is provided in the side-by-side display below. 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. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the A7R II – represents the basis or 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon T6i is notably larger (9 percent) than the Sony A7R II. However, the T6i is markedly lighter (11 percent) than the A7R II. It is worth mentioning in this context that the A7R II is splash and dust resistant, 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 find an overview of optics for the two cameras in the Sony FE Lens Catalog (A7R II) and the Canon EF Lens Catalog (T6i). Mirrorless cameras, such as the Sony A7R II, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.
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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Camera Body Specifications|
|Sony A7R II»||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-|
|Canon T6i«||5.2 in||4.0 in||3.1 in||19.6 oz||440||n||Feb 2015||749||-|
|Canon 77D« »||5.2 in||3.9 in||3.0 in||19.0 oz||600||n||Feb 2017||899|
|Canon T7i« »||5.2 in||3.9 in||3.0 in||18.8 oz||600||n||Feb 2017||749|
|Canon 5DS R« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699|
|Canon 5DS« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699|
|Canon M3« »||4.4 in||2.7 in||1.7 in||12.9 oz||250||n||Feb 2015||679||-|
|Canon T6s« »||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||849||-|
|Canon T5i« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||-|
|Nikon D810« »||5.7 in||4.8 in||3.2 in||34.6 oz||1200||Y||Jun 2014||3,299||-|
|Sony A7 III« »||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499|
|Sony A7R III« »||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-|
|Sony A7R« »||5.0 in||3.7 in||1.9 in||16.4 oz||340||Y||Oct 2013||2,299||-|
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T6i was launched at a markedly lower price (by 77 percent) than the A7R II, 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.
Sensor comparison: Sony A7R II vs Canon T6i
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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Sony A7R II features a full frame sensor and the Canon T6i an APS-C sensor. The sensor area in the T6i is 61 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 42.2MP, the A7R II offers a higher resolution than the T6i (24MP), but the A7R II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.72μm for the T6i) due to its larger sensor. Moreover, the A7R II is a somewhat more recent model (by 4 months) than the T6i, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the A7R II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
Consistent information on actual sensor performance is available from DXO Mark for most 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 review, the A7R II provides substantially higher image quality than the T6i, with an overall score that is 27 points higher. This advantage is based on 3.3 bits higher color depth, 1.9 EV in additional dynamic range, and 1.9 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Sony A7R II»||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
|Canon 77D« »||APS-C||24.0||6000||4000||1080/60p||23.6||13.3||971||78|
|Canon T7i« »||APS-C||24.0||6000||4000||1080/60p||-||-||-||-|
|Canon 5DS R« »||Full Frame||50.3||8688||5792||1080/60p||24.6||12.4||2308||86|
|Canon 5DS« »||Full Frame||50.3||8688||5792||1080/60p||24.7||12.4||2381||87|
|Canon M3« »||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72|
|Canon T6s« »||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70|
|Canon T5i« »||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61|
|Nikon D810« »||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A7R III« »||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A7R« »||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7R II provides a higher video resolution than the T6i. It can shoot video footage at 4K/30p, while the Canon is limited to 1080/60p.
Feature comparison: Sony A7R II vs Canon T6i
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7R II 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 adjacent table lists some of the other core features of the Sony A7R II and Canon T6i along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Sony A7R II»||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y|
|Canon 77D« »||optical||Y||3.0||1040||swivel||Y||4000||6.0||Y||n|
|Canon T7i« »||optical||n||3.0||1040||swivel||Y||4000||6.0||Y||n|
|Canon 5DS R« »||optical||Y||3.2||1040||fixed||n||8000||5.0||n||n|
|Canon 5DS« »||optical||Y||3.2||1040||fixed||n||8000||5.0||n||n|
|Canon M3« »||-||n||3.0||1040||tilting||Y||4000||4.2||Y||n|
|Canon T6s« »||optical||Y||3.0||1040||swivel||Y||4000||5.0||Y||n|
|Canon T5i« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n|
|Nikon D810« »||optical||Y||3.2||1229||fixed||n||4000||5.0||Y||n|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||8000||10.0||n||Y|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y|
|Sony A7R III« »||3686||n||3.0||1440||tilting||Y||8000||10.0||n||Y|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||8000||12.0||n||Y|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y|
|Sony A7R« »||2400||n||3.0||1230||tilting||n||8000||4.0||n||n|
Both the A7R II and the T6i have been discontinued, but can regularly be found used on eBay. The T6i was replaced by the Canon T7i, while the A7R II was followed by the Sony Alpha A7R III.
Review summary: Sony A7R II vs Canon T6i
So what is the bottom line? Which of the two cameras – the Sony A7R II or the Canon T6i – has the upper hand? The listing below highlights the relative strengths of the two models.
Advantages of the Sony Alpha A7R II:
- More detail: Offers more megapixels (42.2 vs 24MP) with a 33% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (27 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (3.3 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (1.9 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1.9 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- More framing info: Has an electronic viewfinder that displays shooting data.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More modern: Is somewhat more recent (announced 4 months after the T6i).
Arguments in favor of the Canon EOS Rebel T6i:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Less heavy: Has a lower weight (by 70g or 11 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (440 versus 290) out of a single battery charge.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in February 2015).
If the number of relative strengths (bullet points above) is taken as a guide, the A7R II is the clear winner of the match-up (14 : 9 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.
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 handling experience and imaging performance when actually working with the A7R II or the T6i. 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 table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.
|Sony A7R II»||HiRec||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-|
|Canon T6i«||-||75/100||4.5/5||4.5/5||4.5/5||Feb 2015||749||-|
|Canon 77D« »||-||82/100||4.5/5||4.5/5||4/5||Feb 2017||899|
|Canon T7i« »||-||80/100||4.5/5||4/5||4/5||Feb 2017||749|
|Canon 5DS R« »||Rec||83/100||5/5||5/5||4.5/5||Feb 2015||3,699|
|Canon 5DS« »||Rec||83/100||4.5/5||5/5||4.5/5||Feb 2015||3,699|
|Canon M3« »||rev||75/100||4.5/5||4.5/5||4/5||Feb 2015||679||-|
|Canon T6s« »||Rec||77/100||4.5/5||4.5/5||4.5/5||Feb 2015||849||-|
|Canon T5i« »||-||76/100||4.5/5||4.5/5||4.5/5||Mar 2013||649||-|
|Nikon D810« »||-||86/100||5/5||4.5/5||4.5/5||Jun 2014||3,299||-|
|Sony A7 III« »||HiRec||89/100||5/5||-||5/5||Feb 2018||1,999|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499|
|Sony A7R III« »||HiRec||90/100||4.5/5||5/5||5/5||Oct 2017||3,199|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199|
|Sony A7S II« »||Rec||-||4.5/5||5/5||5/5||Sep 2015||2,999|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-|
|Sony A7R« »||HiRec||82/100||4.5/5||5/5||5/5||Oct 2013||2,299||-|
The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
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