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Olympus E-M1 III vs Sony A7R II

The Olympus OM-D E-M1 Mark III and the Sony Alpha A7R II are two enthusiast cameras that were officially introduced, respectively, in February 2020 and June 2015. Both the E-M1 III and the A7R II are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1 III) and a full frame (A7R II) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Sony provides 42.2 MP.

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

Headline Specifications
Olympus E-M1 III versus Sony A7R II
Olympus E-M1 III Sony A7R II
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP, Four Thirds Sensor 42.2 MP, Full Frame Sensor
4K/30p Video 4K/30p Video
ISO 200-25,600 ISO 100-25,600 (50 - 102,400)
Electronic viewfinder (2360k dots) Electronic viewfinder (2400k dots)
3.0 LCD, 1037k dots 3.0 LCD, 1229k dots
Swivel touchscreen Tilting screen (not touch-sensitive)
18 shutter flaps per second 5 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
420 shots per battery charge290 shots per battery charge
134 x 91 x 69 mm, 580 g 127 x 96 x 60 mm, 625 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 Mark III and the Sony Alpha A7R II? 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

An illustration of the physical size and weight of the Olympus E-M1 III and the Sony A7R II 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 measures are rounded to the nearest millimeter.

Size Olympus E-M1 III vs Sony A7R II
Compare E-M1 III versus A7R II top
Comparison E-M1 III or A7R II 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 III and the Sony A7R II are of equal size. However, the A7R II is markedly heavier (8 percent) than the E-M1 III. 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 III) and the Sony FE Lens Catalog (A7R II). 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-M1 III gets 420 shots out of its BLH-1 battery, while the A7R II can take 290 images on a single charge of its NP-FW50 power pack. The battery packs of both cameras can be charged via USB, 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
    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 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
2.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
3.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 i
4.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
5.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
6.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
7.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399i
8.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
9.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
10.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i
11.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
12.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 i
13.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 1,799 i
14.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
15.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
16.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999i
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299i
Notes: 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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M1 III was launched at a markedly lower price (by 44 percent) than the A7R II, 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.

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Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Olympus E-M1 III features a Four Thirds sensor and the Sony A7R II a full frame sensor. The sensor area in the A7R II 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-M1 III has a native 4:3 aspect ratio, while the one in the A7R II offers a 3:2 aspect.

Olympus E-M1 III and Sony A7R II sensor measures

With 42.2MP, the A7R II offers a higher resolution than the E-M1 III (20.2MP), but the A7R II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a much more recent model (by 4 years and 8 months) than the A7R II, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Sony A7R II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Olympus E-M1 III are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

Unlike the A7R II, the E-M1 III has the capacity to capture high quality composite images (80MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Olympus OM-D E-M1 Mark III has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Sony Alpha A7R II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

E-M1 III versus A7R II 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. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
2.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
3.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p........
4.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p........
5.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
6.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
7.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
8.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
9.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........
10.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
11.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
12.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.9252086
13.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
14.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
15.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
16.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).

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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 II offers a slightly higher resolution than the one in the E-M1 III (2400k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M1 III, the Sony A7R II, and comparable cameras.

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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
1.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
2.
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
3.
 
Olympus E-M10 IV2360 n 3.0 1040 tilting Y 1/4000s 15.0 Y Y
4.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
5.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
6.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
7.
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y
8.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
9.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
10.
 
Panasonic GH53680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y
11.
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
12.
 
Sony A7S III9440 n 3.0 1440 swivel Y 1/8000s 10.0 n Y
13.
 
Sony A7C2360 n 3.0 922 swivel Y 1/4000s 10.0 n Y
14.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
15.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
16.
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y
17.
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M1 III has a touchscreen, while the A7R II has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The E-M1 III 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 A7R II 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, both cameras under consideration feature an 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 III 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.

The E-M1 III writes its imaging data to SDXC cards, while the A7R II uses SDXC or Memory Stick PRO Duo cards. The E-M1 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7R II only has one slot. The E-M1 III supports UHS-II cards (on its first slot), while the A7R II can use UHS-I 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 OM-D E-M1 Mark III and Sony Alpha A7R II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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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
1.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
2.
 
Sony A7R IIYstereomonoYYmicro2.0YY-
3.
 
Olympus E-M10 IVYstereomono--micro2.0Y-Y
4.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
5.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
6.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
7.
 
Olympus E-M1YstereomonoY-micro2.0Y--
8.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
9.
 
Panasonic G9YstereomonoYYfull3.0Y-Y
10.
 
Panasonic GH5YstereomonoYYfull3.1Y-Y
11.
 
Panasonic GX8YstereomonoY-micro2.0YY-
12.
 
Sony A7S IIIYstereomonoYYfull3.2Y-Y
13.
 
Sony A7CYstereomonoYYmicro3.2YYY
14.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
15.
 
Sony A7S IIYstereomonoYYmicro2.0YY-
16.
 
Sony A7 IIYstereomonoYYmicro2.0YY-
17.
 
Sony A7RYstereomonoYYmicro2.0YY-

Studio photographers will appreciate that the Olympus E-M1 III (unlike the A7R II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The E-M1 III is a recent model that features in the current product line-up of Olympus. In contrast, the A7R II has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the A7R II was succeeded by the Sony Alpha A7R III. 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.

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Review summary

So what is the bottom line? Is there a clear favorite between the Olympus E-M1 III and the Sony A7R II? 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 Olympus OM-D E-M1 Mark III:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.78x).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (18 vs 5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (420 versus 290) on a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More affordable: Was introduced into a lower priced category (44 percent cheaper at launch).
  • More modern: Reflects 4 years and 8 months of technical progress since the A7R II launch.

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Arguments in favor of the Sony Alpha A7R II:

  • More detail: Has more megapixels (42.2 vs 20.2MP), which boosts linear resolution by 48%.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1037k dots).
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been around for much longer (launched in June 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1 III is the clear winner of the match-up (15 : 4 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 III 15:04 A7R II

How about other alternatives? Do the specifications of the Olympus E-M1 III and the Sony A7R II 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 remains incomplete and does no justice, for example, to the way the E-M1 III or the A7R II 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
2.
 
Sony A7R II5/5+ +90/1005/55/5 Jun 2015 3,199i
3.
 
Olympus E-M10 IV4.5/5....4.5/54.5/5 Aug 2020 699 i
4.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
5.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
6.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
7.
 
Olympus E-M15/5+ +84/1004.5/54.5/5 Sep 2013 1,399i
8.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
9.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
10.
 
Panasonic GH54.5/5+ +85/1004.5/55/5 Jan 2017 1,999 i
11.
 
Panasonic GX85/5+82/1004.5/54.5/5 Jul 2015 1,199i
12.
 
Sony A7S III..+ +91/1004.5/55/5 Jul 2020 3,499 i
13.
 
Sony A7C3.5/5..86/1004/54/5 Sep 2020 1,799 i
14.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199i
15.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999i
16.
 
Sony A7 II5/5+82/1004.5/55/5 Nov 2014 1,999i
17.
 
Sony A7R5/5+ +82/1004.5/55/5 Oct 2013 2,299i
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. 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Olympus E-M1 III:
Check Amazon price
Sony A7R II:
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: Olympus E-M1 III vs Sony A7R II

    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 III Sony A7R II
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date February 2020 June 2015
    Launch Price USD 1,799 USD 3,199
    Sensor Specs Olympus E-M1 III Sony A7R II
    Sensor Technology CMOS BSI-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 20.2 Megapixels 42.2 Megapixels
    Image Resolution 5184 x 3888 pixels 7952 x 5304 pixels
    Pixel Pitch 3.34 μm 4.52 μm
    Pixel Density 8.96 MP/cm2 4.90 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 25,600 ISO
    ISO Boost 64 - 25,600 ISO 50 - 102,400 ISO
    Image Processor TruePic IX BIONZ X
    DXO Sensor Quality (score) .. 98
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 13.9
    DXO Low Light (ISO) .. 3434
    Screen Specs Olympus E-M1 III Sony A7R II
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.83x 0.78x
    Viewfinder Resolution 2360k dots 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1037k dots 1229k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-M1 III Sony A7R II
    Focus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 18 shutter flaps/s 5 shutter flaps/s
    Shutter Life Expectancy400 000 actuations500 000 actuations
    Electronic Shutterup to 1/32000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support Single UHS-II UHS-I
    Connectivity Specs Olympus E-M1 III Sony A7R II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.1 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Olympus E-M1 III Sony A7R II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLH-1 NP-FW50
    Battery Life (CIPA)420 shots per charge290 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    127 x 96 x 60 mm
    (5.0 x 3.8 x 2.4 in)
    Camera Weight 580 g (20.5 oz) 625 g (22.0 oz)

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