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Canon 70D vs Olympus E-M1

The Canon EOS 70D and the Olympus OM-D E-M1 are two enthusiast cameras that were officially introduced, respectively, in July 2013 and September 2013. The 70D is a DSLR, while the E-M1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (70D) and a Four Thirds (E-M1) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 15.9 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon 70D   Olympus E-M1
Canon 70D Olympus E-M1
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
20 MP, APS-C Sensor 15.9 MP, Four Thirds Sensor
1080/30p Video 1080/30p Video
ISO 100-12800 (100-25600) ISO 100-25600
Optical viewfinder Electronic viewfinder (2360k dots)
3.0" LCD, 1040k dots 3.0" LCD, 1037k dots
Swivel touchscreen Tilting touchscreen
7 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
920 shots per battery charge350 shots per battery charge
139 x 104 x 79 mm, 755 g 130 x 94 x 63 mm, 497 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 70D and the Olympus OM-D E-M1? 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.

Body comparison

The physical size and weight of the Canon 70D and the Olympus E-M1 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.

The E-M1 can be obtained in two different colors (black, silver), while the 70D is only available in black.

Size Canon 70D vs Olympus E-M1
Compare 70D versus E-M1 top
Comparison 70D or E-M1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1 is notably smaller (15 percent) than the Canon 70D. Moreover, the E-M1 is markedly lighter (34 percent) than the 70D. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 (70D) and the Micro Four Thirds Lens Catalog (E-M1). Mirrorless cameras, such as the E-M1, 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 70D gets 920 shots out of its LP-E6 battery, while the E-M1 can take 350 images on a single charge of its BLN-1 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras 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)
Camera
Model
 
Canon 70D» 5.5 in 4.1 in 3.1 in 26.6 oz 920 Y Jul 2013 1,199- i Canon 70D
 
Olympus E-M1« 5.1 in 3.7 in 2.5 in 17.5 oz 350 Y Sep 2013 1,399- i Olympus E-M1
 
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199- i Canon 80D
 
Canon G3 X« » 4.8 in 3.0 in 4.1 in 25.9 oz 300 Y Jun 2015 999 i i Canon G3 X
 
Canon 7D II« » 5.9 in 4.4 in 3.1 in 32.1 oz 670 Y Sep 2014 1,799 i i Canon 7D II
 
Canon T5« » 5.1 in 3.9 in 3.1 in 16.9 oz 500 n Feb 2014 449- i Canon T5
 
Canon 6D« » 5.7 in 4.4 in 2.8 in 27.2 oz 1090 Y Sep 2012 2,099- i Canon 6D
 
Canon 60D« » 5.7 in 4.2 in 3.1 in 26.6 oz 1100 Y Aug 2010 1,399- i Canon 60D
 
Canon 7D« » 5.8 in 4.4 in 2.9 in 30.3 oz 800 Y Sep 2009 1,699- i Canon 7D
 
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
 
Nikon D7100« » 5.4 in 4.2 in 3.0 in 27.0 oz 950 Y Feb 2013 1,199- i Nikon D7100
 
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 i i Olympus E-M1 II
 
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 i i Olympus PEN-F
 
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099 i i Olympus E-M5 II
 
Olympus E-P5« » 4.8 in 2.7 in 1.5 in 14.8 oz 330 n May 2013 999- i Olympus E-P5
 
Olympus E-M5« » 4.8 in 3.5 in 1.7 in 15.0 oz 360 Y Feb 2012 1,299- i Olympus E-M5
 
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i Sony RX10
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 70D was launched at a somewhat lower price (by 14 percent) than the E-M1, 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.

 

Sensor comparison

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

Of the two cameras under consideration, the Canon 70D features an APS-C sensor and the Olympus E-M1 a Four Thirds sensor. The sensor area in the E-M1 is 33 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 70D has a native 3:2 aspect ratio, while the one in the E-M1 offers a 4:3 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Canon 70D and Olympus E-M1 sensor measures

With 20MP, the 70D offers a higher resolution than the E-M1 (15.9MP), but the 70D nevertheless has larger individual pixels (pixel pitch of 4.11μm versus 3.76μm for the E-M1) 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. Coming back to sensor resolution, it should be mentioned that the E-M1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon 70D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 70D for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Olympus E-M1 are 23 x 17.3 inch or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inch or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inch or 39 x 29.3 cm for excellent quality prints.

The Canon EOS 70D 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 Olympus OM-D E-M1 are ISO 100 to ISO 25600 (no boost).

70D versus E-M1 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 E-M1 has a markedly higher DXO score than the 70D (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.5 bits higher color depth, 1.1 EV in additional dynamic range, and 0.3 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon 70D» APS-C 20.0 5472 36481080/30p22.511.692668Canon 70D
 
Olympus E-M1« Four Thirds 15.9 4608 34561080/30p23.012.775773Olympus E-M1
 
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
 
Canon G3 X« » 1-inch 20.0 5472 36481080/60p21.412.352163Canon G3 X
 
Canon 7D II« » APS-C 20.0 5472 36481080/60p22.411.8108270Canon 7D II
 
Canon T5« » APS-C 17.9 5184 34561080/30p21.911.372463Canon T5
 
Canon 6D« » Full Frame 20.0 5472 36481080/30p23.812.1234082Canon 6D
 
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
 
Canon 7D« » APS-C 17.9 5184 34561080/30p22.011.785466Canon 7D
 
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
 
Nikon D7100« » APS-C 24.0 6000 40001080/60p24.213.7125683Nikon D7100
 
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
 
Olympus PEN-F« » Four Thirds 20.2 5184 38881080/60p23.112.489474Olympus PEN-F
 
Olympus E-M5 II« » Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
 
Olympus E-P5« » Four Thirds 15.9 4608 34561080/30p22.812.489572Olympus E-P5
 
Olympus E-M5« » Four Thirds 15.9 4608 34561080/60i22.812.382671Olympus E-M5
 
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469Sony RX10

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/30p).

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M1 has an electronic viewfinder (2360k dots), while the 70D 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 E-M1 offers a wider field of view (100%) than the one in the 70D (98%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the E-M1 has a higher magnification (0.74x vs 0.59x), 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 70D, the Olympus E-M1, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Canon 70D»optical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n Canon 70D
 
Olympus E-M1«2360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y Olympus E-M1
 
Canon 80D« »optical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n Canon 80D
 
Canon G3 X« »- n 3.2 1620 tilting Y 1/2000s 5.9 Y Y Canon G3 X
 
Canon 7D II« »optical Y 3.0 1040 fixed n 1/8000s 10.0 Y n Canon 7D II
 
Canon T5« »optical n 3.0 460 fixed n 1/4000s 3.0 Y n Canon T5
 
Canon 6D« »optical Y 3.0 1040 fixed n 1/4000s 4.5 n n Canon 6D
 
Canon 60D« »optical Y 3.0 1040 swivel n 1/8000s 5.3 Y n Canon 60D
 
Canon 7D« »optical Y 3.0 920 fixed n 1/8000s 8.0 Y n Canon 7D
 
Canon 50D« »optical Y 3.0 920 fixed n 1/8000s 6.3 Y n Canon 50D
 
Nikon D7100« »optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n Nikon D7100
 
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1 II
 
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus PEN-F
 
Olympus E-M5 II« »2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus E-M5 II
 
Olympus E-P5« »- n 3.0 1037 tilting Y 1/8000s 9.0 Y Y Olympus E-P5
 
Olympus E-M5« »1440 n 3.0 610 tilting Y 1/4000s 9.0 n Y Olympus E-M5
 
Sony RX10« »1440 Y 3.0 1229 tilting n 1/3200s 10.0 Y Y Sony RX10

One difference between the cameras concerns the presence of an on-board flash. The 70D has one, while the E-M1 does not. While the built-in flash of the 70D is not very powerful, it can at times be useful as a fill-in light.

The 70D 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 E-M1 does not have a selfie-screen.

The Olympus E-M1 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the 70D and the E-M1 write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

 

Connectivity comparison

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 70D and Olympus OM-D E-M1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon 70D»YstereomonoY-mini2.0Y--Canon 70D
 
Olympus E-M1«YstereomonoY-micro2.0Y--Olympus E-M1
 
Canon 80D« »YstereomonoYYmini2.0YY-Canon 80D
 
Canon G3 X« »YstereomonoYYmini2.0YY-Canon G3 X
 
Canon 7D II« »YstereomonoYYmini3.0---Canon 7D II
 
Canon T5« »Ymonomono--mini2.0---Canon T5
 
Canon 6D« »YmonomonoY-mini2.0Y--Canon 6D
 
Canon 60D« »YmonomonoY-mini2.0---Canon 60D
 
Canon 7D« »Ymono-Y-mini2.0---Canon 7D
 
Canon 50D« »Y----mini2.0---Canon 50D
 
Nikon D7100« »YstereomonoYYmini2.0---Nikon D7100
 
Olympus E-M1 II« »YstereomonoYYmicro3.0Y--Olympus E-M1 II
 
Olympus PEN-F« »Ystereomono--micro2.0Y--Olympus PEN-F
 
Olympus E-M5 II« »YstereomonoY-micro2.0Y--Olympus E-M5 II
 
Olympus E-P5« »Ystereomono--micro2.0Y--Olympus E-P5
 
Olympus E-M5« »Ystereomono--mini2.0---Olympus E-M5
 
Sony RX10« »YstereomonoYYmicro2.0YY-Sony RX10

Studio photographers will appreciate that the Olympus E-M1 (unlike the 70D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 70D and the E-M1 have been discontinued, but can regularly be found used on eBay. The 70D was replaced by the Canon 80D, while the E-M1 was followed by the Olympus E-M1 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 Olympus websites.


Review summary

So what is the bottom line? Is there a clear favorite between the Canon 70D and the Olympus E-M1? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Canon EOS 70D:

  • More detail: Offers more megapixels (20 vs 15.9MP) with a 14% 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.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Longer lasting: Can take more shots (920 versus 350) 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 segment (14 percent cheaper at launch).

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Arguments in favor of the Olympus OM-D E-M1:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
  • 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 98%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.59x).
  • Faster burst: Shoots at higher frequency (10 vs 7 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (130x94mm vs 139x104mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 258g or 34 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1 is the clear winner of the contest (13 : 9 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

70D 09:13 E-M1

How about other alternatives? Do the specifications of the Canon 70D and the Olympus E-M1 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 70D and the E-M1 in practical situations. 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.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Canon 70D»+ +83/1004.5/54.5/55/5 Jul 2013 1,199- i Canon 70D
 
Olympus E-M1«+ +84/1004.5/54.5/54.5/5 Sep 2013 1,399- i Olympus E-M1
 
Canon 80D« »+ +84/1004.5/54.5/54.5/5 Feb 2016 1,199- i Canon 80D
 
Canon G3 X« »+-4.5/53.5/54/5 Jun 2015 999 i i Canon G3 X
 
Canon 7D II« »+84/1004/55/54.5/5 Sep 2014 1,799 i i Canon 7D II
 
Canon T5« »+-4/54/54.5/5 Feb 2014 449- i Canon T5
 
Canon 6D« »+ +83/1004.5/54.5/54.5/5 Sep 2012 2,099- i Canon 6D
 
Canon 60D« »+79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
 
Canon 7D« »+ +84/1004.5/55/54.5/5 Sep 2009 1,699- i Canon 7D
 
Canon 50D« »+ ++ +4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
 
Nikon D7100« »+ +85/1004.5/55/54.5/5 Feb 2013 1,199- i Nikon D7100
 
Olympus E-M1 II« »+ +85/1004.5/55/54.5/5 Sep 2016 1,999 i i Olympus E-M1 II
 
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i Olympus PEN-F
 
Olympus E-M5 II« »+ +81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
 
Olympus E-P5« »+ +78/1004.5/54.5/55/5 May 2013 999- i Olympus E-P5
 
Olympus E-M5« »+ +80/1004.5/55/55/5 Feb 2012 1,299- i Olympus E-M5
 
Sony RX10« »+80/1004.5/54.5/54.5/5 Oct 2013 1,299- i Sony RX10
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, please note that some of the review sites have changed their methodology and reporting over time.

Canon 70D:
Check Ebay offers
Olympus E-M1:
Check Ebay offers

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 70D vs Olympus E-M1

    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 Specifications
    Camera Model Canon 70D Olympus E-M1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date July 2013 September 2013
    Launch Price USD 1199 USD 1399
    Sensor Specs Canon 70D Olympus E-M1
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Four Thirds Sensor
    Sensor Size 22.5 x 15.0 mm 17.3 x 13.0 mm
    Sensor Area 337.5 mm2 224.9 mm2
    Sensor Diagonal 27 mm 21.6 mm
    Crop Factor 1.6x 2.0x
    Sensor Resolution 20 Megapixels 15.9 Megapixels
    Image Resolution 5472 x 3648 pixels 4608 x 3456 pixels
    Pixel Pitch 4.11 μm 3.76 μm
    Pixel Density 5.91 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 1080/30p Video
    ISO Setting 100-12800 ISO 100-25600 ISO
    ISO Boost 100-25600 ISO no Enhancement
    Image Processor DIGIC 5+ TruePIC VII
    DXO Sensor Quality (score) 68 73
    DXO Color Depth (bits) 22.5 23.0
    DXO Dynamic Range (EV) 11.6 12.7
    DXO Low Light (ISO) 926 757
    Screen Specs Canon 70D Olympus E-M1
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 98% 100%
    Viewfinder Magnification 0.59x 0.74x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 70D Olympus E-M1
    Autofocus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/8000/s
    Continuous Shooting 7 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations150 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Canon 70D Olympus E-M1
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support Wifi built-in Wifi built-in
    Body Specs Canon 70D Olympus E-M1
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E6 BLN-1
    Battery Life (CIPA)920 shots per charge350 shots per charge
    Body Dimensions 139 x 104 x 79 mm
    (5.5 x 4.1 x 3.1 in)
    130 x 94 x 63 mm
    (5.1 x 3.7 x 2.5 in)
    Camera Weight 755 g (26.6 oz) 497 g (17.5 oz)

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