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Olympus E-P2 vs Sony A7R

The Olympus PEN E-P2 and the Sony Alpha A7R are two enthusiast cameras that were officially introduced, respectively, in November 2009 and October 2013. Both the E-P2 and the A7R are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-P2) and a full frame (A7R) sensor. The Olympus has a resolution of 12.2 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-P2
versus
Sony A7R
Olympus E-P2   Sony A7R
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
12.2 MP – Four Thirds sensor 36.2 MP – Full Frame sensor
720/30p Video 1080/60p Video
ISO 100-6,400 ISO 100-25,600 (50 - 51,200)
Viewfinder optional Electronic viewfinder (2400k dots)
3.0" LCD – 230k dots 3.0" LCD – 1230k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
3 shutter flaps per second 4 shutter flaps per second
In-body stabilizationLens stabilization only
not weather sealedWeathersealed body
300 shots per battery charge340 shots per battery charge
121 x 70 x 36 mm, 355 g 127 x 94 x 48 mm, 465 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-P2 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Olympus E-P2 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-P2 can be obtained in three different colors (black, silver, white), while the A7R is only available in black.

Size Olympus E-P2 vs Sony A7R
Compare E-P2 versus A7R top
Comparison E-P2 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 (41 percent) than the Olympus E-P2. Moreover, the A7R is markedly heavier (31 percent) than the E-P2. It is noteworthy in this context that the A7R is splash and dust-proof, while the E-P2 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor 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-P2) 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-P2 gets 300 shots out of its Olympus BLS-1 battery, while the A7R can take 340 images on a single charge of its Sony 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 following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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
Street
Price
1.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 US$ 799ebay.com
2.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 US$ 2 299ebay.com
3.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 US$ 699ebay.com
4.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 US$ 699ebay.com
5.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 US$ 799ebay.com
6.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 US$ 799ebay.com
7.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 US$ 599ebay.com
8.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 US$ 599ebay.com
9.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 US$ 599ebay.com
10.
 
Panasonic G10 124 mm 84 mm 74 mm 388 g 380 n Mar 2010 US$ 499ebay.com
11.
 
Panasonic GF1 119 mm 71 mm 36 mm 385 g 380 n Sep 2009 US$ 749ebay.com
12.
 
Panasonic GH1 124 mm 90 mm 45 mm 385 g 300 n Mar 2009 US$ 899ebay.com
13.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 US$ 1 699ebay.com
14.
 
Sony A7 IV 131 mm 96 mm 80 mm 659 g 580 Y Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C II 124 mm 71 mm 63 mm 514 g 540 Y Aug 2023 US$ 2 199 amazon.com
16.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 US$ 3 199ebay.com
17.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 US$ 2 499ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-P2 was launched at a markedly lower price (by 65 percent) than the A7R, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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. 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 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-P2 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-P2 has a native 4:3 aspect ratio, while the one in the A7R offers a 3:2 aspect.

Olympus E-P2 and Sony A7R sensor measures

With 36.2MP, the A7R offers a higher resolution than the E-P2 (12.2MP), but the A7R nevertheless has larger individual pixels (pixel pitch of 4.88μm versus 4.29μm for the E-P2) due to its larger sensor. Moreover, the A7R is a much more recent model (by 3 years and 11 months) than the E-P2, and its sensor will 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 inches or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inches or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inches or 62.3 x 41.6 cm. The corresponding values for the Olympus E-P2 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 cm for excellent quality prints.

The Olympus PEN E-P2 has a native sensitivity range from ISO 100 to ISO 6400. 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.

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-P2 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-P2 (overall score 39 points higher). The advantage is based on 4.1 bits higher color depth, 3.7 EV in additional dynamic range, and 2.4 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.

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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-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
2.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
3.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
4.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
5.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
6.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
7.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
8.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
9.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
10.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
11.
 
Panasonic GF1 Four Thirds 12.0 4000 3000720/30p21.210.351354
12.
 
Panasonic GH1 Four Thirds 12.0 4000 30001080/24p21.611.677264
13.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
14.
 
Sony A7 IV Full Frame 32.7 7008 46724K/60p25.414.7337997
15.
 
Sony A7C II Full Frame 32.7 7008 46724K/60p25.414.7323796
16.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
17.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
Note: DXO values in italics represent estimates based on sensor size and age.

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, but the A7R provides a better video resolution than the E-P2. It can shoot movie footage at 1080/60p, while the Olympus is limited to 720/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7R has an electronic viewfinder (2400k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-P2 relies on live view and the rear LCD for framing. That said, the E-P2 can be equipped with an optional viewfinder – the VF-2. The following table reports on some other key feature differences and similarities of the Olympus E-P2, the Sony A7R, 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-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
2.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
3.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
4.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
5.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
6.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
7.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
8.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
9.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
10.
 
Panasonic G10202 n3.0 / 460 fixed n 1/4000s 2.6/s Y n
11.
 
Panasonic GF1optional n3.0 / 460 fixed n 1/4000s 3.0/s Y n
12.
 
Panasonic GH11440 n3.0 / 460 swivel n 1/4000s 3.0/s Y n
13.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
14.
 
Sony A7 IV3686 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
15.
 
Sony A7C II2360 n3.0 / 1037 swivel Y 1/4000s 10.0/s n Y
16.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
17.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the E-P2 and the A7R is in-body image stabilization (IBIS). The E-P2 reduces the risk of handshake-induced blur with all attached lenses, while the A7R offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The E-P2 writes its imaging data to SDHC cards, while the A7R uses SDXC or Memory Stick PRO Duo cards. The A7R supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-P2 cannot take advantage of Ultra High Speed SD cards.

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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 PEN E-P2 and Sony Alpha A7R 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-P2Ystereo / ---mini2.0---
2.
 
Sony A7RYstereo / monoYYmicro2.0YY-
3.
 
Olympus E-520Y- / ----2.0---
4.
 
Olympus E-620Y- / ----2.0---
5.
 
Olympus E-P1Ystereo / ---mini2.0---
6.
 
Olympus E-P3Ystereo / ---mini2.0---
7.
 
Olympus E-PL1Ystereo / ---mini2.0---
8.
 
Olympus E-PL2Ystereo / ---mini2.0---
9.
 
Olympus E-PL3Ystereo / ---mini2.0---
10.
 
Panasonic G10Ymono / ---mini2.0---
11.
 
Panasonic GF1Ymono / mono--mini2.0---
12.
 
Panasonic GH1Ystereo / -Y-mini2.0---
13.
 
Sony A7Ystereo / monoYYmicro2.0YY-
14.
 
Sony A7 IVYstereo / monoYYfull3.2Y-Y
15.
 
Sony A7C IIYstereo / monoYYmicro3.2Y-Y
16.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
17.
 
Sony A7SYstereo / monoYYmicro2.0YY-

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-P2 does not provide wifi capability.

Both the E-P2 and the A7R have been discontinued, but can regularly be found used on ebay. The E-P2 was replaced by the Olympus E-P3, while the A7R was followed by the Sony A7R II. Further information on the features and operation of the E-P2 and A7R can be found, respectively, in the Olympus E-P2 Manual (free pdf) or the online Sony A7R Manual.

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Review summary

So what conclusions can be drawn? Is there a clear favorite between the Olympus E-P2 and the Sony A7R? Which camera is better? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Olympus PEN E-P2:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (121x70mm vs 127x94mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 110g or 24 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More affordable: Was introduced into a lower priced category (65 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in November 2009).

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Reasons to prefer the Sony Alpha A7R:

  • More detail: Has more megapixels (36.2 vs 12.2MP), which boosts linear resolution by 76%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (39 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (4.1 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.7 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.4 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/60p vs 720/30p).
  • 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.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (4 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (340 versus 300) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 3 years and 11 months of technical progress since the E-P2 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7R is the clear winner of the contest (21 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. 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-P2 06:21 A7R

How about other alternatives? Do the specifications of the Olympus E-P2 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 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 E-P2 and the A7R 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 why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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
Street
Price
1.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 US$ 799ebay.com
2.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 US$ 2 299ebay.com
3.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 US$ 699ebay.com
4.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 US$ 699ebay.com
5.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 US$ 799ebay.com
6.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 US$ 799ebay.com
7.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 US$ 599ebay.com
8.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 US$ 599ebay.com
9.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 US$ 599ebay.com
10.
 
Panasonic G103/5....70/1004/54/5 Mar 2010 US$ 499ebay.com
11.
 
Panasonic GF1..85/100..69/1004.5/54.5/5 Sep 2009 US$ 749ebay.com
12.
 
Panasonic GH1..+ +..72/1004.5/54.5/5 Mar 2009 US$ 899ebay.com
13.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 US$ 1 699ebay.com
14.
 
Sony A7 IV5/5+ +4.5/589/1004.5/54.5/5 Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C II4/5..4/587/1004.5/54.5/5 Aug 2023 US$ 2 199 amazon.com
16.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 US$ 3 199ebay.com
17.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 US$ 2 499ebay.com
Note: (+ +) 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. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Olympus E-P2 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-P2 Sony A7R
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date November 2009 October 2013
    Launch Price USD 799 USD 2,299
    Sensor Specs Olympus E-P2 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 12.2 Megapixels 36.2 Megapixels
    Image Resolution 4032 x 3024 pixels 7360 x 4912 pixels
    Pixel Pitch 4.29 μm 4.88 μm
    Pixel Density 5.42 MP/cm2 4.20 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 720/30p Video 1080/60p Video
    ISO Setting 100 - 6,400 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 51,200 ISO
    Image Processor TruePic V BIONZ X
    DXO Sensor Quality (score) 56 95
    DXO Color Depth (bits) 21.5 25.6
    DXO Dynamic Range (EV) 10.4 14.1
    DXO Low Light (ISO) 505 2746
    Screen Specs Olympus E-P2 Sony A7R
    Viewfinder Type Viewfinder optional Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.71x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 230k dots 1230k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Olympus E-P2 Sony A7R
    Focus System Contrast-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 4 shutter flaps/s
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDHC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Olympus E-P2 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-P2 Sony A7R
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-1 Sony NP-FW50
    Battery Life (CIPA)300 shots per charge340 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 121 x 70 x 36 mm
    (4.8 x 2.8 x 1.4 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 355 g (12.5 oz) 465 g (16.4 oz)
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    Check E-P2 offers at
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    Check A7R offers at
    ebay.com

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