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Canon 6D Mark II versus Canon SL2

The Canon EOS 6D Mark II and the Canon EOS Rebel SL2 (labelled Canon 200D in some countries) are two digital cameras that were officially introduced in June 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (6D Mark II) and an APS-C (SL2) sensor. The 6D Mark II has a resolution of 26 megapixel, whereas the SL2 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: Canon 6D Mark II vs Canon SL2

The physical size and weight of the Canon 6D Mark II and the Canon SL2 are illustrated in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the 6D Mark II – represents the basis for the calculations across all the size and weight measures).

Snapsort Canon 6D Mark II vs Canon SL2
Compare 6D Mark II versus SL2 top
Compare 6D Mark II and SL2 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SL2 is notably smaller (29 percent) than the Canon 6D Mark II. Moreover, the SL2 is substantially lighter (41 percent) than the 6D Mark II. It is worth mentioning in this context that the 6D Mark II is splash and dust resistant, while the SL2 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 (as in the 6D Mark II) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (SL2). You can find a comprehensive overview of suitable optics in the Canon EF Lens Catalog.

Concerning battery life, the 6D Mark II gets 1200 shots out of its LP-E6N battery, while the SL2 can take 650 images on a single charge of its LP-E17 power pack.

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
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon 6D Mark II» 5.7 in 4.4 in 3.0 in 27.0 oz 1200 Y Jun 2017 1,999 i i
Canon SL2« 4.8 in 3.7 in 2.8 in 16.0 oz 650 n Jun 2017 549 i i
Canon T7« » 5.1 in 4.0 in 3.1 in 16.8 oz 500 n Feb 2018 449 i i
Canon G9 X Mark II« » 3.9 in 2.3 in 1.2 in 7.3 oz 235 n Jan 2017 529 i i
Canon T7i« » 5.2 in 3.9 in 3.0 in 18.8 oz 600 n Feb 2017 749 i i
Canon 5D Mark IV« » 5.9 in 4.6 in 3.0 in 31.4 oz 900 Y Aug 2016 3,499 i i
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i
Canon M5« » 4.6 in 3.5 in 2.4 in 15.1 oz 295 n Sep 2016 979 i i
Canon 1D X Mark II« » 6.2 in 6.6 in 3.3 in 54.0 oz 1210 Y Feb 2016 5,999 i i
Canon 6D« » 5.7 in 4.4 in 2.8 in 27.2 oz 1090 Y Sep 2012 2,099- i
Canon 5D Mark III« » 6.0 in 4.6 in 3.0 in 33.5 oz 950 Y Mar 2012 3,499- i
Canon 5D Mark II« » 6.0 in 4.5 in 3.0 in 30.0 oz 850 Y Sep 2008 3,499- i
Nikon D3400« » 4.9 in 3.9 in 3.0 in 15.7 oz 1200 n Aug 2016 499 i i
Nikon D500« » 5.8 in 4.5 in 3.2 in 30.3 oz 1240 Y Jan 2016 1,999 i i
Nikon D750« » 5.6 in 4.4 in 3.1 in 26.5 oz 1230 Y Sep 2014 2,299 i i
Nikon D610« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i i
Nikon D600« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Sep 2012 2,099- i

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 SL2 was launched at a markedly lower price (by 73 percent) than the 6D Mark 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: Canon 6D Mark II vs Canon SL2

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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 6D Mark II features a full frame sensor and the Canon SL2 an APS-C sensor. The sensor area in the SL2 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.

Canon 6D Mark II and Canon SL2 sensor measures

With 26MP, the 6D Mark II offers a slightly higher resolution than the SL2 (24MP), but the 6D Mark II nevertheless has larger individual pixels (pixel pitch of 5.76μm versus 3.72μm for the SL2) due to its larger sensor. It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation.

6D Mark II versus SL2 MP

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 6D Mark II has a notably higher overall DXO score than the SL2 (overall score 6 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.8 bits higher color depth, 1.5 EV of lower dynamic range, and 1.5 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.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon 6D Mark II» Full Frame 26.0 6240 41601080/60p24.411.9286285
Canon SL2« APS-C 24.0 6000 40001080/60p23.613.4104179
Canon T7« » APS-C 24.0 6000 40001080/30p----
Canon G9 X Mark II« » 1-inch 20.0 5472 36481080/60p21.912.552265
Canon T7i« » APS-C 24.0 6000 40001080/60p----
Canon 5D Mark IV« » Full Frame 30.1 6720 44804K/30p24.813.6299591
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579
Canon M5« » APS-C 24.0 6000 40001080/60p23.412.4126277
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788
Canon 6D« » Full Frame 20.0 5472 36481080/30p23.812.1234082
Canon 5D Mark III« » Full Frame 22.1 5760 38401080/30p24.011.7229381
Canon 5D Mark II« » Full Frame 21.0 5616 37441080/30p23.711.9181579
Nikon D3400« » APS-C 24.0 6000 40001080/60p24.813.9119286
Nikon D500« » APS-C 20.7 5568 37124K/30p24.014.0132483
Nikon D750« » Full Frame 24.2 6016 40161080/60p24.814.5295693
Nikon D610« » Full Frame 24.2 6016 40161080/30p25.114.4292594
Nikon D600« » Full Frame 24.2 6016 40161080/30p25.114.2298094

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, and both provide the same movie specifications (1080/60p).

 

Feature comparison: Canon 6D Mark II vs Canon SL2

Beyond body and sensor, cameras can and do differ across a range of features. The 6D Mark II and the SL2 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The table below summarizes some of the other core capabilities of the Canon 6D Mark II and Canon SL2 in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Canon 6D Mark II»optical Y 3.0 1040 swivel Y 4000 6.5 n n
Canon SL2«optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon T7« »optical n 3.0 920 fixed n 4000 3.0 Y n
Canon G9 X Mark II« »- n 3.0 1040 fixed Y 2000 8.2 Y Y
Canon T7i« »optical n 3.0 1040 swivel Y 4000 6.0 Y n
Canon 5D Mark IV« »optical Y 3.2 1620 fixed Y 8000 7.0 n n
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n
Canon M5« »2360 n 3.2 1620 tilting Y 4000 9.0 Y n
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n
Canon 6D« »optical Y 3.0 1040 fixed n 4000 4.5 n n
Canon 5D Mark III« »optical Y 3.2 1040 fixed n 8000 6.0 n n
Canon 5D Mark II« »optical Y 3.0 920 fixed n 8000 3.9 n n
Nikon D3400« »optical n 3.0 921 fixed n 4000 5.0 Y n
Nikon D500« »optical Y 3.2 2359 tilting Y 8000 10.0 n n
Nikon D750« »optical Y 3.2 1229 tilting n 4000 6.0 Y n
Nikon D610« »optical Y 3.2 921 fixed n 4000 6.0 Y n
Nikon D600« »optical Y 3.0 921 fixed n 4000 5.5 Y n

Both the 6D Mark II and the SL2 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The 6D Mark II replaced the earlier Canon 6D, while the SL2 followed on from the Canon SL1.

Review summary: Canon 6D Mark II vs Canon SL2

So what is the bottom line? Is there a clear favorite between the Canon 6D Mark II and the Canon SL2? A synthesis of the relative strong points of each of the models is listed below.


Advantages of the Canon EOS 6D Mark II:

  • Better image quality: Scores markedly higher (6 points) in the DXO overall assessment.
  • Better low-light sensitivity: Requires less light for good images (1.5 stops ISO advantage).
  • Easier setting verification: Has an LCD display on top to control shooting parameters.
  • Faster burst: Shoots at higher frequency (6.5 vs 5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (1200 versus 650) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.


Reasons to prefer the Canon EOS Rebel SL2:

  • More dynamic range: Captures a broader range of light and dark details (1.5 EV of extra DR).
  • More compact: Is smaller (122x93mm vs 144x111mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 312g or 41 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (73 percent cheaper at launch).

If the number of relative strengths (bullet points above) is taken as a guide, the 6D Mark II comes out slightly ahead of the SL2 (6 : 5 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.

6D Mark II 06:05 SL2

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 6D Mark II or the SL2. 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 why hands-on reviews by experts are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon 6D Mark II»Rec80/1004.5/54/54/5 Jun 2017 1,999 i i
Canon SL2«HiRec78/1004.5/54.5/54.5/5 Jun 2017 549 i i
Canon T7« »rev-3.5/5-3.5/5 Feb 2018 449 i i
Canon G9 X Mark II« »-75/1004.5/54.5/54.5/5 Jan 2017 529 i i
Canon T7i« »-80/1004.5/54/54/5 Feb 2017 749 i i
Canon 5D Mark IV« »HiRec87/1004.5/55/54.5/5 Aug 2016 3,499 i i
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i
Canon M5« »Rec82/1004/54.5/54/5 Sep 2016 979 i i
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i
Canon 6D« »HiRec83/1004.5/54.5/54.5/5 Sep 2012 2,099- i
Canon 5D Mark III« »HiRec82/1004.5/55/54.5/5 Mar 2012 3,499- i
Canon 5D Mark II« »91/10079/1004/55/5- Sep 2008 3,499- i
Nikon D3400« »Rec76/1004/54.5/54.5/5 Aug 2016 499 i i
Nikon D500« »HiRec91/1004.5/55/55/5 Jan 2016 1,999 i i
Nikon D750« »HiRec90/1004.5/55/54.5/5 Sep 2014 2,299 i i
Nikon D610« »HiRec87/1004.5/54.5/54.5/5 Oct 2013 1,999 i i
Nikon D600« »HiRec87/1005/54.5/54.5/5 Sep 2012 2,099- i

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. 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you cannot find the camera you are interested in, kindly get in touch, and I will try to update the database with the necessary infos.

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