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Olympus E-M5 vs Sony A7R

The Olympus OM-D E-M5 and the Sony Alpha A7R are two enthusiast cameras that were officially introduced, respectively, in February 2012 and October 2013. Both the E-M5 and the A7R are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M5) and a full frame (A7R) sensor. The Olympus has a resolution of 15.9 megapixels, whereas the Sony provides 36.2 MP.

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

Headline Specifications
Olympus E-M5 VS Sony A7R
Olympus E-M5 Sony A7R
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
15.9 MP, Four Thirds Sensor 36.2 MP, Full Frame Sensor
1080/60i Video 1080/60p Video
ISO 200-25600 ISO 100-25600 (50-51200)
Electronic viewfinder (1440k dots) Electronic viewfinder (2400k dots)
3.0" LCD, 610k dots 3.0" LCD, 1230k dots
Tilting touchscreen Tilting screen (not touch-sensitive)
9 shutter flaps per second 4 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
360 shots per battery charge340 shots per battery charge
122 x 89 x 43 mm, 425 g 127 x 94 x 48 mm, 465 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M5 and the Sony Alpha A7R? 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 side-by-side display below illustrates the physical size and weight of the Olympus E-M5 and the Sony A7R. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

The E-M5 can be obtained in two different colors (black, silver), while the A7R is only available in black.

Size Olympus E-M5 vs Sony A7R
Compare E-M5 versus A7R top
Comparison E-M5 or A7R rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R is notably larger (10 percent) than the Olympus E-M5. Moreover, the A7R is markedly heavier (9 percent) than the E-M5. 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-M5) and the Sony FE Lens Catalog (A7R). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

Concerning battery life, the E-M5 gets 360 shots out of its BLN-1 battery, while the A7R can take 340 images on a single charge of its NP-FW50 power pack. The power pack in the A7R can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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)
Camera
Model
 
Olympus E-M5» 4.8 in 3.5 in 1.7 in 15.0 oz 360 Y Feb 2012 1,299iOlympus E-M5
 
Sony A7R« 5.0 in 3.7 in 1.9 in 16.4 oz 340 Y Oct 2013 2,299iSony A7R
 
Nikon D810« » 5.7 in 4.8 in 3.2 in 34.6 oz 1200 Y Jun 2014 3,299iNikon D810
 
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 iOlympus PEN-F
 
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099iOlympus E-M5 II
 
Olympus E-PL7« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Aug 2014 599iOlympus E-PL7
 
Olympus E-M1« » 5.1 in 3.7 in 2.5 in 17.5 oz 350 Y Sep 2013 1,399iOlympus E-M1
 
Olympus E-P5« » 4.8 in 2.7 in 1.5 in 14.8 oz 330 n May 2013 999iOlympus E-P5
 
Olympus E-PL5« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n Sep 2012 599iOlympus E-PL5
 
Olympus E-PM2« » 4.3 in 2.5 in 1.3 in 9.5 oz 360 n Sep 2012 499iOlympus E-PM2
 
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199iPanasonic GX8
 
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999iPanasonic GX7
 
Panasonic GH3« » 5.2 in 3.7 in 3.2 in 19.4 oz 540 Y Sep 2012 1,299iPanasonic GH3
 
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199iSony A7R II
 
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999iSony A7 II
 
Sony A7S« » 5.0 in 3.7 in 1.9 in 17.2 oz 380 Y Apr 2014 2,499iSony A7S
 
Sony A7« » 5.0 in 3.7 in 1.9 in 16.7 oz 340 Y Oct 2013 1,699iSony A7
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

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 E-M5 was launched at a markedly lower price (by 43 percent) than the A7R, 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

The size of the sensor inside a digital camera is one of the key determinants 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Olympus E-M5 features a Four Thirds sensor and the Sony A7R a full frame sensor. The sensor area in the A7R is 283 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the E-M5 has a native 4:3 aspect ratio, while the one in the A7R offers a 3:2 aspect.

Olympus E-M5 and Sony A7R sensor measures

With 36.2MP, the A7R offers a higher resolution than the E-M5 (15.9MP), but the A7R nevertheless has larger individual pixels (pixel pitch of 4.88μm versus 3.76μm for the E-M5) due to its larger sensor. Moreover, the A7R is a somewhat more recent model (by 1 year and 8 months) than the E-M5, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A7R has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inch or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inch or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inch or 62.3 x 41.6 cm. The corresponding values for the Olympus E-M5 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 Olympus OM-D E-M5 has a native sensitivity range from ISO 200 to ISO 25600. The corresponding ISO settings for the Sony Alpha A7R are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.

E-M5 versus A7R MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 consideration, the A7R offers substantially better image quality than the E-M5 (overall score 24 points higher). The advantage is based on 2.8 bits higher color depth, 1.8 EV in additional dynamic range, and 1.7 stops in additional low light sensitivity. 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
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671Olympus E-M5
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397Nikon D810
 
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-PL7 Four Thirds 15.9 4608 34561080/30p22.712.487372Olympus E-PL7
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773Olympus E-M1
 
Olympus E-P5 Four Thirds 15.9 4608 34561080/30p22.812.489572Olympus E-P5
 
Olympus E-PL5 Four Thirds 15.9 4608 34561080/30p22.812.388972Olympus E-PL5
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272Olympus E-PM2
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
 
Panasonic GH3 Four Thirds 15.9 4608 34561080/60p22.712.481271Panasonic GH3
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287Sony A7S
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890Sony A7

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, but the A7R provides a faster frame rate than the E-M5. It can shoot movie footage at 1080/60p, while the Olympus is limited to 1080/60i.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7R offers a substantially higher resolution than the one in the E-M5 (2400k vs 1440k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M5, the Sony A7R, 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
 
Olympus E-M51440 n 3.0 610 tilting Y 1/4000s 9.0 n Y Olympus E-M5
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n Sony A7R
 
Nikon D810optical Y 3.2 1229 fixed n 1/8000s 5.0 Y n Nikon D810
 
Olympus PEN-F2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus PEN-F
 
Olympus E-M5 II2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus E-M5 II
 
Olympus E-PL7optional n 3.0 1037 tilting Y 1/4000s 8.0 n Y Olympus E-PL7
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y Olympus E-M1
 
Olympus E-P5optional n 3.0 1037 tilting Y 1/8000s 9.0 Y Y Olympus E-P5
 
Olympus E-PL5optional n 3.0 460 tilting Y 1/4000s 8.0 n Y Olympus E-PL5
 
Olympus E-PM2optional n 3.0 460 fixed Y 1/4000s 8.0 n Y Olympus E-PM2
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Panasonic GX8
 
Panasonic GX72760 n 3.0 1040 tilting Y 1/8000s 5.0 Y Y Panasonic GX7
 
Panasonic GH31746 n 3.0 614 swivel Y 1/4000s 6.0 Y n Panasonic GH3
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7R II
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y Sony A7 II
 
Sony A7S2400 n 3.0 921 tilting n 1/8000s 5.0 n n Sony A7S
 
Sony A72400 n 3.0 1230 tilting n 1/8000s 5.0 n n Sony A7

One feature that differentiates the E-M5 and the A7R is in-body image stabilization (IBIS). The E-M5 reduces the risk of handshake-induced blur with all attached lenses, while the A7R has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The E-M5 writes its imaging data to SDXC cards, while the A7R uses SDXC or Memory Stick PRO Duo 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 Olympus OM-D E-M5 and Sony Alpha A7R 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
Port
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Olympus E-M5Ystereomono--mini2.0---Olympus E-M5
 
Sony A7RYstereomonoYYmicro2.0YY-Sony A7R
 
Nikon D810YstereomonoYYmini3.0Y--Nikon D810
 
Olympus PEN-FYstereomono--micro2.0Y--Olympus PEN-F
 
Olympus E-M5 IIYstereomonoY-micro2.0Y--Olympus E-M5 II
 
Olympus E-PL7Ystereomono--micro2.0Y--Olympus E-PL7
 
Olympus E-M1YstereomonoY-micro2.0Y--Olympus E-M1
 
Olympus E-P5Ystereomono--micro2.0Y--Olympus E-P5
 
Olympus E-PL5Ystereomono--mini2.0---Olympus E-PL5
 
Olympus E-PM2Ystereomono--mini2.0---Olympus E-PM2
 
Panasonic GX8YstereomonoY-micro2.0YY-Panasonic GX8
 
Panasonic GX7Ystereomono--mini2.0YY-Panasonic GX7
 
Panasonic GH3YstereomonoYYmini2.0Y--Panasonic GH3
 
Sony A7R IIYstereomonoYYmicro2.0YY-Sony A7R II
 
Sony A7 IIYstereomonoYYmicro2.0YY-Sony A7 II
 
Sony A7SYstereomonoYYmicro2.0YY-Sony A7S
 
Sony A7YstereomonoYYmicro2.0YY-Sony A7

It is notable that the A7R offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-M5 does not offer wifi capability.

Both the E-M5 and the A7R have been discontinued, but can regularly be found used on eBay. The E-M5 was replaced by the Olympus E-M5 II, while the A7R was followed by the Sony A7R II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Sony websites.

Review summary

So how do things add up? Which of the two cameras – the Olympus E-M5 or the Sony A7R – 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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Reasons to prefer the Olympus OM-D E-M5:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (9 vs 4 flaps/sec) to capture the decisive moment.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More affordable: Was introduced into a lower priced category (43 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2012).

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Arguments in favor of the Sony Alpha A7R:

  • More detail: Has more megapixels (36.2 vs 15.9MP), which boosts linear resolution by 54%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (24 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.8 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.8 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.7 stops ISO advantage).
  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2400k vs 1440k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.58x).
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 610k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More modern: Was introduced somewhat (1 year and 8 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the A7R is the clear winner of the contest (16 : 6 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

E-M5 06:16 A7R

How about other alternatives? Do the specifications of the Olympus E-M5 and the Sony A7R place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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-M5 or the A7R 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.

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
cam
era
  labs  
dp
re
  view  
e
photo
  zine  
ima
ging
resource
photo
graphy
  blog  
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Olympus E-M5+ +80/1004.5/55/55/5 Feb 2012 1,299iOlympus E-M5
 
Sony A7R+ +82/1004.5/55/55/5 Oct 2013 2,299iSony A7R
 
Nikon D810..86/1005/54.5/54.5/5 Jun 2014 3,299iNikon D810
 
Olympus PEN-F..82/1004.5/54.5/55/5 Jan 2016 1,199 iOlympus PEN-F
 
Olympus E-M5 II+ +81/1005/54.5/55/5 Feb 2015 1,099iOlympus E-M5 II
 
Olympus E-PL7+..5/54.5/54/5 Aug 2014 599iOlympus E-PL7
 
Olympus E-M1+ +84/1004.5/54.5/54.5/5 Sep 2013 1,399iOlympus E-M1
 
Olympus E-P5+ +78/1004.5/54.5/55/5 May 2013 999iOlympus E-P5
 
Olympus E-PL5+ +..4.5/54.5/54.5/5 Sep 2012 599iOlympus E-PL5
 
Olympus E-PM2..77/1005/54.5/54.5/5 Sep 2012 499iOlympus E-PM2
 
Panasonic GX8+82/1004.5/55/54.5/5 Jul 2015 1,199iPanasonic GX8
 
Panasonic GX7+79/1005/54.5/55/5 Aug 2013 999iPanasonic GX7
 
Panasonic GH3+ +79/1004.5/55/54.5/5 Sep 2012 1,299iPanasonic GH3
 
Sony A7R II+ +90/1005/54.5/55/5 Jun 2015 3,199iSony A7R II
 
Sony A7 II+82/1004.5/55/55/5 Nov 2014 1,999iSony A7 II
 
Sony A7S..86/1004.5/54.5/55/5 Apr 2014 2,499iSony A7S
 
Sony A7+ +80/1005/54.5/55/5 Oct 2013 1,699iSony A7
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Olympus E-M5:
Check Ebay offers
Sony A7R:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Olympus E-M5 vs Sony A7R

    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-M5 Sony A7R
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date February 2012 October 2013
    Launch Price USD 1299 USD 2299
    Sensor Specs Olympus E-M5 Sony A7R
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 24.0 mm
    Sensor Area 224.9 mm2 861.6 mm2
    Sensor Diagonal 21.6 mm 43.2 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 15.9 Megapixels 36.2 Megapixels
    Image Resolution 4608 x 3456 pixels 7360 x 4912 pixels
    Pixel Pitch 3.76 μm 4.88 μm
    Pixel Density 7.08 MP/cm2 4.20 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60i Video 1080/60p Video
    ISO Setting 200-25600 ISO 100-25600 ISO
    ISO Boost no Enhancement 50-51200 ISO
    Image Processor TruePic VI BIONZ X
    DXO Sensor Quality (score) 71 95
    DXO Color Depth (bits) 22.8 25.6
    DXO Dynamic Range (EV) 12.3 14.1
    DXO Low Light (ISO) 826 2746
    Screen Specs Olympus E-M5 Sony A7R
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.58x 0.71x
    Viewfinder Resolution 1440k dots 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 610k dots 1230k dots
    LCD Attachment Tilting screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-M5 Sony A7R
    Focus System Contrast-detect AF Contrast-detect AF
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000/s 1/8000/s
    Continuous Shooting 9 shutter flaps/s 4 shutter flaps/s
    Shutter Life Expectancy100 000 actuations250 000 actuations
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Olympus E-M5 Sony A7R
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Olympus E-M5 Sony A7R
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLN-1 NP-FW50
    Battery Life (CIPA)360 shots per charge340 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 122 x 89 x 43 mm
    (4.8 x 3.5 x 1.7 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 425 g (15.0 oz) 465 g (16.4 oz)

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