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Olympus E-M1 vs Canon 70D

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

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

Headline Specifications
Olympus E-M1
versus
Canon 70D
Olympus E-M1   Canon 70D
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Canon EF mount lenses
15.9 MP – Four Thirds sensor 20 MP – APS-C sensor
1080/30p Video 1080/30p Video
ISO 200-25,600 ISO 100-12,800 (100 - 25,600)
Electronic viewfinder (2360k dots) Optical viewfinder
3.0" LCD – 1037k dots 3.0" LCD – 1040k dots
Tilting touchscreen Swivel touchscreen
10 shutter flaps per second 7 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
350 shots per battery charge920 shots per battery charge
130 x 94 x 63 mm, 497 g 139 x 104 x 79 mm, 755 g
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Check 70D offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 and the Canon EOS 70D? 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.

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Body comparison

An illustration of the physical size and weight of the Olympus E-M1 and the Canon 70D is provided 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 dimensions 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 Olympus E-M1 vs Canon 70D
Compare E-M1 versus 70D top
Comparison E-M1 or 70D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 70D is notably larger (18 percent) than the Olympus E-M1. Moreover, the 70D is substantially heavier (52 percent) than the E-M1. 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 Micro Four Thirds Lens Catalog (E-M1) and the Canon EF Lens Catalog (70D). Mirrorless cameras, such as the Olympus E-M1, 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.

Concerning battery life, the E-M1 gets 350 shots out of its Olympus BLN-1 battery, while the 70D can take 920 images on a single charge of its Canon LP-E6 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399ebay.com
2.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199ebay.com
3.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
4.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399ebay.com
5.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199ebay.com
6.
 
Canon G3 X 123 mm 77 mm 105 mm 733 g 300 Y Jun 2015 999ebay.com
7.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
8.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999ebay.com
9.
 
Olympus E-M5 122 mm 89 mm 43 mm 425 g 360 Y Feb 2012 1,299ebay.com
10.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099ebay.com
11.
 
Olympus E-P5 122 mm 69 mm 37 mm 420 g 330 n May 2013 999ebay.com
12.
 
Olympus E-PL5 111 mm 64 mm 38 mm 325 g 360 n Sep 2012 599ebay.com
13.
 
Olympus E-PL7 115 mm 67 mm 38 mm 357 g 350 n Aug 2014 599ebay.com
14.
 
Olympus E-PM2 110 mm 64 mm 34 mm 269 g 360 n Sep 2012 499ebay.com
15.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 n Jan 2016 1,199ebay.com
16.
 
Panasonic GH3 133 mm 93 mm 82 mm 550 g 540 Y Sep 2012 1,299ebay.com
17.
 
Panasonic GH4 133 mm 93 mm 84 mm 560 g 500 Y Feb 2014 1,499ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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 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 imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Olympus E-M1 features a Four Thirds sensor and the Canon 70D an APS-C sensor. The sensor area in the 70D is 50 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.6. The sensor in the E-M1 has a native 4:3 aspect ratio, while the one in the 70D offers a 3:2 aspect.

Olympus E-M1 and Canon 70D 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 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Olympus E-M1 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The Olympus OM-D E-M1 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Canon EOS 70D are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

E-M1 versus 70D MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the E-M1 has a notably higher overall DXO score than the 70D (overall score 5 points higher), which gives it an advantage in terms of imaging quality. This 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
2.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
3.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
4.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
5.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
6.
 
Canon G3 X 1-inch 20.0 5472 36481080/60p21.412.352163
7.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
8.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
9.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
10.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
11.
 
Olympus E-P5 Four Thirds 15.9 4608 34561080/30p22.812.489572
12.
 
Olympus E-PL5 Four Thirds 15.9 4608 34561080/30p22.812.388972
13.
 
Olympus E-PL7 Four Thirds 15.9 4608 34561080/30p22.712.487372
14.
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272
15.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
16.
 
Panasonic GH3 Four Thirds 15.9 4608 34561080/60p22.712.481271
17.
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/30p).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range 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 Olympus E-M1, the Canon 70D, and comparable cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Olympus E-M12360 n3.0 / 1037 tilting Y 1/8000s 10.0/s n Y
2.
 
Canon 70Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
3.
 
Canon 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
4.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
5.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
6.
 
Canon G3 Xoptional n3.2 / 1620 tilting Y 1/2000s 5.9/s Y Y
7.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
8.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
9.
 
Olympus E-M51440 n3.0 / 610 tilting Y 1/4000s 9.0/s n Y
10.
 
Olympus E-M5 II2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
11.
 
Olympus E-P5optional n3.0 / 1037 tilting Y 1/8000s 9.0/s Y Y
12.
 
Olympus E-PL5optional n3.0 / 460 tilting Y 1/4000s 8.0/s n Y
13.
 
Olympus E-PL7optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
14.
 
Olympus E-PM2optional n3.0 / 460 fixed Y 1/4000s 8.0/s n Y
15.
 
Olympus PEN-F2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
16.
 
Panasonic GH31746 n3.0 / 614 swivel Y 1/4000s 6.0/s Y n
17.
 
Panasonic GH42359 n3.0 / 1036 swivel Y 1/8000s 12.0/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the E-M1 and the 70D is in-body image stabilization (IBIS). The E-M1 reduces the risk of handshake-induced blur with all attached lenses, while the 70D offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The 70D has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the E-M1 does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the E-M1 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

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 E-M1 and the 70D 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.

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

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-M1Ystereo / monoY-micro2.0Y--
2.
 
Canon 70DYstereo / monoY-mini2.0Y--
3.
 
Canon 7D IIYstereo / monoYYmini3.0---
4.
 
Canon 60DYmono / monoY-mini2.0---
5.
 
Canon 80DYstereo / monoYYmini2.0YY-
6.
 
Canon G3 XYstereo / monoYYmini2.0YY-
7.
 
Nikon D7100Ystereo / monoYYmini2.0---
8.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
9.
 
Olympus E-M5Ystereo / mono--mini2.0---
10.
 
Olympus E-M5 IIYstereo / monoY-micro2.0Y--
11.
 
Olympus E-P5Ystereo / mono--micro2.0Y--
12.
 
Olympus E-PL5Ystereo / mono--mini2.0---
13.
 
Olympus E-PL7Ystereo / mono--micro2.0Y--
14.
 
Olympus E-PM2Ystereo / mono--mini2.0---
15.
 
Olympus PEN-FYstereo / mono--micro2.0Y--
16.
 
Panasonic GH3Ystereo / monoYYmini2.0Y--
17.
 
Panasonic GH4Ystereo / monoYYmicro2.0YY-

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 E-M1 and the 70D 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 features and operation of the E-M1 and 70D can be found, respectively, in the Olympus E-M1 Manual (free pdf) or the online Canon 70D Manual.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Olympus E-M1 or the Canon 70D – 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.

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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 assessment.
  • More dynamic range: Captures a larger spectrum 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.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (130x94mm vs 139x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 258g or 34 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.

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Reasons to prefer the Canon EOS 70D:

  • More detail: Has more megapixels (20 vs 15.9MP), which boosts linear resolution by 14%.
  • 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 a control panel on top to check 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: Gets more shots (920 versus 350) out of a single battery charge.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was released into a lower priced segment (14 percent cheaper at launch).

If the count of relative strengths (bullet points above) is taken as a measure, the E-M1 is the clear winner of the match-up (14 : 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.

E-M1 14:09 70D

How about other alternatives? Do the specifications of the Olympus E-M1 and the Canon 70D place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the E-M1 or the 70D perform in practice. 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.

Expert reviews

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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 1,399ebay.com
2.
 
Canon 70D5/5+ +..83/1004.5/55/5 Jul 2013 1,199ebay.com
3.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
4.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 1,399ebay.com
5.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 1,199ebay.com
6.
 
Canon G3 X3.5/5+....4.5/54/5 Jun 2015 999ebay.com
7.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
8.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 1,999ebay.com
9.
 
Olympus E-M54/5+ +..80/1004.5/55/5 Feb 2012 1,299ebay.com
10.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 1,099ebay.com
11.
 
Olympus E-P55/5+ +..78/1004.5/55/5 May 2013 999ebay.com
12.
 
Olympus E-PL53/5+ +....4.5/54.5/5 Sep 2012 599ebay.com
13.
 
Olympus E-PL74/5+....5/54/5 Aug 2014 599ebay.com
14.
 
Olympus E-PM23/5....77/1005/54.5/5 Sep 2012 499ebay.com
15.
 
Olympus PEN-F....4/582/1004.5/55/5 Jan 2016 1,199ebay.com
16.
 
Panasonic GH35/5+ +..79/1004.5/54.5/5 Sep 2012 1,299ebay.com
17.
 
Panasonic GH45/5+ +..85/1005/55/5 Feb 2014 1,499ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted 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.

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

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    Specifications: Olympus E-M1 vs Canon 70D

    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 Olympus E-M1 Canon 70D
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Canon EF mount lenses
    Launch Date September 2013 July 2013
    Launch Price USD 1,399 USD 1,199
    Sensor Specs Olympus E-M1 Canon 70D
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 22.5 x 15.0 mm
    Sensor Area 224.9 mm2 337.5 mm2
    Sensor Diagonal 21.6 mm 27 mm
    Crop Factor 2.0x 1.6x
    Sensor Resolution 15.9 Megapixels 20 Megapixels
    Image Resolution 4608 x 3456 pixels 5472 x 3648 pixels
    Pixel Pitch 3.76 μm 4.11 μm
    Pixel Density 7.08 MP/cm2 5.91 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/30p Video 1080/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 12,800 ISO
    ISO Boost 100 - 25,600 ISO 100 - 25,600 ISO
    Image Processor TruePIC VII DIGIC 5+
    DXO Sensor Quality (score) 73 68
    DXO Color Depth (bits) 23.0 22.5
    DXO Dynamic Range (EV) 12.7 11.6
    DXO Low Light (ISO) 757 926
    Screen Specs Olympus E-M1 Canon 70D
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.74x 0.59x
    Viewfinder Resolution 2360k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1037k dots 1040k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M1 Canon 70D
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 10 shutter flaps/s 7 shutter flaps/s
    Shutter Life Expectancy150 000 actuations100 000 actuations
    Electronic ShutterYESno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Olympus E-M1 Canon 70D
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support Wifi built-in Wifi built-in
    Body Specs Olympus E-M1 Canon 70D
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Olympus BLN-1 Canon LP-E6
    Battery Life (CIPA)350 shots per charge920 shots per charge
    Body Dimensions 130 x 94 x 63 mm
    (5.1 x 3.7 x 2.5 in)
    139 x 104 x 79 mm
    (5.5 x 4.1 x 3.1 in)
    Camera Weight 497 g (17.5 oz) 755 g (26.6 oz)
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