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Canon SL2 versus Olympus E-M10 III

The Canon EOS Rebel SL2 (called Canon 200D in some regions) and the Olympus OM-D E-M10 Mark III are two digital cameras that were revealed to the public, respectively, in June 2017 and August 2017. The SL2 is a DSLR, while the E-M10 III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (SL2) and a Four Thirds sensor. The Canon has a resolution of 24 megapixel, whereas the Olympus provides 15.9 MP.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon SL2 and the Olympus E-M10 III. Three consecutive views from the front, the top, and the rear side 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 SL2 – represents the basis for the calculations across all the size and weight measures).

Canon SL2 vs Olympus E-M10 III front
SL2 versus E-M10 III top view
SL2 and E-M10 III rear side
Body view (SL2 on the left)

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 III is notably smaller (10 percent) than the Canon SL2. Moreover, the E-M10 III is markedly lighter (9 percent) than the SL2. In this context, it is worth noting that neither the SL2 nor the E-M10 III are weather-sealed.

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 Canon EF Lens Catalog (SL2) and the Micro Four Thirds Lens Catalog (E-M10 III). Mirrorless cameras, such as the E-M10 III, 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 SL2 gets 650 shots out of its LP-E17 battery, while the E-M10 III can take 330 images on a single charge of its BLS-50 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 comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon SL2 (⇒ rgt) 122 mm 93 mm 70 mm 453 g 650 no 2017 549 latest check
Olympus E-M10 III (⇒ lft) 122 mm 84 mm 50 mm 410 g 330 no 2017 649 latest check
Canon T7 (⇒ lft | rgt) 129 mm 101 mm 78 mm 475 g 500 no 2018 449 latest check
Canon G9 X Mark II (⇒ lft | rgt) 98 mm 58 mm 31 mm 206 g 235 no 2017 529 latest check
Canon 77D (⇒ lft | rgt) 131 mm 100 mm 76 mm 540 g 600 no 2017 899 latest check
Canon M100 (⇒ lft | rgt) 108 mm 67 mm 35 mm 302 g 295 no 2017 499 latest check
Canon M6 (⇒ lft | rgt) 112 mm 68 mm 45 mm 390 g 295 no 2017 779 latest check
Canon T7i (⇒ lft | rgt) 131 mm 100 mm 76 mm 532 g 600 no 2017 749 latest check
Canon M5 (⇒ lft | rgt) 116 mm 89 mm 61 mm 427 g 295 no 2016 979 latest check
Canon T6i (⇒ lft | rgt) 132 mm 101 mm 78 mm 555 g 440 no 2015 749discont. check
Canon SL1 (⇒ lft | rgt) 117 mm 91 mm 69 mm 407 g 380 no 2013 549discont. check
Nikon D3400 (⇒ lft | rgt) 124 mm 98 mm 76 mm 445 g 1200 no 2016 499 latest check
Olympus E-PL9 (⇒ lft | rgt) 117 mm 68 mm 39 mm 380 g 350 no 2018 549 latest check
Olympus E-PL8 (⇒ lft | rgt) 115 mm 67 mm 38 mm 357 g 350 no 2016 549discont. check
Olympus E-M10 (⇒ lft | rgt) 119 mm 82 mm 46 mm 396 g 320 no 2014 699discont. check
Olympus E-M1 (⇒ lft | rgt) 130 mm 94 mm 63 mm 497 g 350 YES 2013 1,399discont. check
Panasonic GX85 (⇒ lft | rgt) 122 mm 71 mm 44 mm 426 g 290 no 2016 799 latest check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The SL2 was launched at a somewhat lower price (by 15 percent) than the E-M10 III, which makes it more attractive for photographers on a tight budget. 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

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

Of the two cameras under consideration, the Canon SL2 features an APS-C sensor and the Olympus E-M10 III a Four Thirds sensor. The sensor area in the E-M10 III is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the SL2 has a native 3:2 aspect ratio, while the one in the E-M10 III offers a 4:3 aspect.

Canon SL2 and Olympus E-M10 III sensor measures
Sensor size

With 24MP, the SL2 offers a higher resolution than the E-M10 III (15.9MP), but the SL2 has marginally smaller individual pixels (pixel pitch of 3.72μm versus 3.76μm for the E-M10 III). 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. Coming back to sensor resolution, it should be mentioned that the E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

SL2 versus E-M10 III MP
Sensor resolution

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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon SL2 (⇒ rgt) APS-C 24.0 6000 4000 1080/60p 23.6 13.4 1041 79
Olympus E-M10 III (⇒ lft) Four Thirds 15.9 4608 3456 4K/30p .. .. .. ..
Canon T7 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/30p .. .. .. ..
Canon G9 X Mark II (⇒ lft | rgt) 1-inch 20.0 5472 3648 1080/60p 21.9 12.5 522 65
Canon 77D (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon M100 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 23.5 12.9 1272 78
Canon M6 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon T7i (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon M5 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 23.4 12.4 1262 77
Canon T6i (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 22.7 12.0 919 71
Canon SL1 (⇒ lft | rgt) APS-C 17.9 5184 3456 1080/30p 21.8 11.3 843 63
Nikon D3400 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p 24.8 13.9 1192 86
Olympus E-PL9 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 4K/30p - - - -
Olympus E-PL8 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/30p - - - -
Olympus E-M10 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/30p 22.8 12.3 884 72
Olympus E-M1 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/30p 23.0 12.7 757 73
Panasonic GX85 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 4K/30p 22.9 12.6 662 71

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 E-M10 III provides a better video resolution than the SL2. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-M10 III has an electronic viewfinder (2360k dots), while the SL2 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 Canon SL2 and Olympus E-M10 III along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Canon SL2 (⇒ rgt) optical no 3.0 1040 swivel YES 4000 5.0 9.8 no
Olympus E-M10 III (⇒ lft) 2360 no 3.0 1040 tilting YES 4000 8.6 5.8 YES
Canon T7 (⇒ lft | rgt) optical no 3.0 920 fixed no 4000 3.0 9.2 no
Canon G9 X Mark II (⇒ lft | rgt) no no 3.0 1040 fixed YES 2000 8.2 6 YES
Canon 77D (⇒ lft | rgt) optical YES 3.0 1040 swivel YES 4000 6.0 12 no
Canon M100 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 6.1 5 no
Canon M6 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 9.0 5 no
Canon T7i (⇒ lft | rgt) optical no 3.0 1040 swivel YES 4000 6.0 12 no
Canon M5 (⇒ lft | rgt) 2360 no 3.2 1620 tilting YES 4000 9.0 5 no
Canon T6i (⇒ lft | rgt) optical no 3.0 1040 swivel YES 4000 5.0 12 no
Canon SL1 (⇒ lft | rgt) optical no 3.0 1040 fixed YES 4000 4.9 9.4 no
Nikon D3400 (⇒ lft | rgt) optical no 3.0 921 fixed no 4000 5.0 7 no
Olympus E-PL9 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 8.6 7.6 YES
Olympus E-PL8 (⇒ lft | rgt) no no 3.0 1037 tilting YES 4000 8.0 no YES
Olympus E-M10 (⇒ lft | rgt) 1440 no 3.0 1037 tilting YES 4000 8.0 5.8 YES
Olympus E-M1 (⇒ lft | rgt) 2360 no 3.0 1037 tilting YES 8000 10.0 no YES
Panasonic GX85 (⇒ lft | rgt) 2765 no 3.0 1040 tilting YES 4000 8.0 6 YES

Both the SL2 and the E-M10 III are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The SL2 replaced the earlier Canon SL1, while the E-M10 III followed on from the Olympus E-M10 II.

Summary

So what conclusions can be drawn? Is the Canon SL2 better than the Olympus E-M10 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.


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Advantages of the Canon EOS Rebel SL2:

  • More detail: Offers more megapixels (24 vs 15.9MP) with a 25% higher linear resolution.
  • 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.
  • Longer lasting: Can take more shots (650 versus 330) on a single battery charge.
  • More affordable: Was introduced into a lower priced segment (15 percent cheaper at launch).

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Arguments in favor of the Olympus OM-D E-M10 Mark III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Faster burst: Shoots at higher frequency (8.6 vs 5 flaps/sec) to capture the decisive moment.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.

If the count of individual advantages (bullet points above) is taken as a guide, the match-up finishes in a tie (6 points each). 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.

SL2 06:06 E-M10 III

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the SL2 or the E-M10 III handle or perform in practice. 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 expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites. The detailed reviews can be accessed, respectively, on the websites of cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
dp
review
ephoto
zine
imaging
resource
photography
blog
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Canon SL2 (⇒ rgt) HiRec 78/100 Silver 4.5/5 - 4.5/5 2017 549 latest check
Olympus E-M10 III (⇒ lft) Rec 80/100 4.5/5 .. 4.5/5 2017 649 latest check
Canon T7 (⇒ lft | rgt) .. .. .. .. .. 2018 449 latest check
Canon G9 X Mark II (⇒ lft | rgt) .. 75/100 4.5/5 4.5/5 4.5/5 2017 529 latest check
Canon 77D (⇒ lft | rgt) .. 82/100 Silver 4.5/5 4.5/5 4/5 2017 899 latest check
Canon M100 (⇒ lft | rgt) Rec .. 4/5 .. 3.5/5 2017 499 latest check
Canon M6 (⇒ lft | rgt) - 80/100 Silver 4/5 4.5/5 4/5 2017 779 latest check
Canon T7i (⇒ lft | rgt) .. 80/100 Gold 4.5/5 .. 4/5 2017 749 latest check
Canon M5 (⇒ lft | rgt) Rec 82/100 Silver 4/5 4.5/5 4/5 2016 979 latest check
Canon T6i (⇒ lft | rgt) - 75/100 4.5/5 4.5/5 4.5/5 2015 749discont. check
Canon SL1 (⇒ lft | rgt) Rec 78/100 Gold 4/5 4/5 4/5 2013 549discont. check
Nikon D3400 (⇒ lft | rgt) Rec 76/100 4/5 4.5/5 4.5/5 2016 499 latest check
Olympus E-PL9 (⇒ lft | rgt) .. .. .. .. 4/5 2018 549 latest check
Olympus E-PL8 (⇒ lft | rgt) - - 4.5/5 - 4/5 2016 549discont. check
Olympus E-M10 (⇒ lft | rgt) - 80/100 Gold 5/5 4.5/5 5/5 2014 699discont. check
Olympus E-M1 (⇒ lft | rgt) HiRec 84/100 Gold 4.5/5 4.5/5 4.5/5 2013 1,399discont. check
Panasonic GX85 (⇒ lft | rgt) HiRec 82/100 Silver 5/5 4.5/5 5/5 2016 799 latest check

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. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Other comparisons

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you cannot find the camera you are interested in, please send me an email, and I will try to locate and add the respective data to the application.

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