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Olympus E-M1 III vs Sony A6400

The Olympus OM-D E-M1 Mark III and the Sony Alpha A6400 are two enthusiast cameras that were announced, respectively, in February 2020 and January 2019. Both the E-M1 III and the A6400 are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1 III) and an APS-C (A6400) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Sony provides 24 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 A6400
Olympus E-M1 III Sony A6400
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP, Four Thirds Sensor 24 MP, APS-C Sensor
4K/30p Video 4K/30p Video
ISO 200-25,600 ISO 100-32,000 (100 - 102,400)
Electronic viewfinder (2360k dots) Electronic viewfinder (2359k dots)
3.0 LCD, 1037k dots 3.0 LCD, 922k dots
Swivel touchscreen Tilting touchscreen
18 shutter flaps per second 11 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
420 shots per battery charge410 shots per battery charge
134 x 91 x 69 mm, 580 g 120 x 67 x 50 mm, 403 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 A6400? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The physical size and weight of the Olympus E-M1 III and the Sony A6400 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Size Olympus E-M1 III vs Sony A6400
Compare E-M1 III versus A6400 top
Comparison E-M1 III or A6400 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A6400 is considerably smaller (34 percent) than the Olympus E-M1 III. Moreover, the A6400 is markedly lighter (31 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 E-Mount Lens Catalog (A6400). 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 A6400 can take 410 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 adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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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 A6400 120 mm 67 mm 50 mm 403 g 410 Y Jan 2019 899 i
3.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799i
4.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 i
5.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
6.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
7.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
8.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399i
9.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
10.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
11.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i
12.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
13.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 1,799 i
14.
 
Sony A6100 120 mm 67 mm 59 mm 396 g 420 n Aug 2019 749 i
15.
 
Sony A6300 120 mm 67 mm 49 mm 404 g 400 Y Feb 2016 999i
16.
 
Sony A5100 110 mm 63 mm 36 mm 283 g 400 n Aug 2014 549 i
17.
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599i
Notes: 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 A6400 was launched at a markedly lower price (by 50 percent) than the E-M1 III, 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 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. 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-M1 III features a Four Thirds sensor and the Sony A6400 an APS-C sensor. The sensor area in the A6400 is 63 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-M1 III has a native 4:3 aspect ratio, while the one in the A6400 offers a 3:2 aspect.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Olympus E-M1 III and Sony A6400 sensor measures

With 24MP, the A6400 offers a higher resolution than the E-M1 III (20.2MP), but the A6400 nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a somewhat more recent model (by 1 year) than the A6400, and its sensor might 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 the E-M1 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A6400 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A6400 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 A6400, 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 A6400 are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 100-102400.

E-M1 III versus A6400 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"). 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 A6400 APS-C 24.0 6000 40004K/30p2413.6143183
3.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
4.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p........
5.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p........
6.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
7.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
8.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
9.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
10.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........
11.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
12.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
13.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
14.
 
Sony A6100 APS-C 24.0 6000 40004K/30p........
15.
 
Sony A6300 APS-C 24.0 6000 40004K/30p24.413.7143785
16.
 
Sony A5100 APS-C 24.0 6000 40001080/60p23.812.7134780
17.
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the E-M1 III offers a slightly higher resolution than the one in the A6400 (2360k vs 2359k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M1 III, the Sony A6400, 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 A64002359 n 3.0 922 tilting Y 1/4000s 11.0 Y n
3.
 
Nikon D5300optical n 3.2 1037 swivel n 1/4000s 5.0 Y n
4.
 
Olympus E-M10 IV2360 n 3.0 1040 tilting Y 1/4000s 15.0 Y Y
5.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
6.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
7.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
8.
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y
9.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
10.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
11.
 
Panasonic GH53680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y
12.
 
Panasonic GX82360 n 3.0 1040 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 A61001440 n 3.0 922 tilting Y 1/4000s 11.0 Y n
15.
 
Sony A63002359 n 3.0 922 tilting n 1/4000s 11.0 Y n
16.
 
Sony A5100none n 3.0 922 tilting Y 1/4000s 6.0 Y n
17.
 
Sony A60001440 n 3.0 922 tilting n 1/4000s 11.0 Y n

One feature that differentiates the E-M1 III and the A6400 is in-body image stabilization (IBIS). The E-M1 III reduces the risk of handshake-induced blur with all attached lenses, while the A6400 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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 A6400 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 A6400 only has one slot. The E-M1 III supports UHS-II cards (on its first slot), while the A6400 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 A6400 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 A6400YstereomonoY-micro2.0YYY
3.
 
Nikon D5300YstereomonoY-mini2.0Y--
4.
 
Olympus E-M10 IVYstereomono--micro2.0Y-Y
5.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
6.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
7.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
8.
 
Olympus E-M1YstereomonoY-micro2.0Y--
9.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
10.
 
Panasonic G9YstereomonoYYfull3.0Y-Y
11.
 
Panasonic GH5YstereomonoYYfull3.1Y-Y
12.
 
Panasonic GX8YstereomonoY-micro2.0YY-
13.
 
Sony A7CYstereomonoYYmicro3.2YYY
14.
 
Sony A6100YstereomonoY-micro2.0YYY
15.
 
Sony A6300YstereomonoY-micro2.0YY-
16.
 
Sony A5100-stereomono--micro2.0YY-
17.
 
Sony A6000Ystereomono--micro2.0YY-

It is notable that the E-M1 III has a headphone jack, which is not present on the A6400 This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.

Studio photographers will appreciate that the Olympus E-M1 III (unlike the A6400) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-M1 III and the A6400 are recent models that are part of the current product line-up. The A6400 replaced the earlier Sony A6300, while the E-M1 III followed on from the Olympus E-M1 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official 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 A6400? 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:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.70x).
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 922k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (18 vs 11 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • 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 modern: Is somewhat more recent (announced 1 year after the A6400).

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Arguments in favor of the Sony Alpha A6400:

  • More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • More compact: Is smaller (120x67mm vs 134x91mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 177g or 31 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (50 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in January 2019).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1 III emerges as the winner of the contest (15 : 12 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-M1 III 15:12 A6400

How about other alternatives? Do the specifications of the Olympus E-M1 III and the Sony A6400 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-M1 III and the A6400 in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (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 A64004/5+85/1004.5/54/5 Jan 2019 899 i
3.
 
Nikon D53004/5+ +79/1004.5/54.5/5 Oct 2013 799i
4.
 
Olympus E-M10 IV4.5/5....4.5/54.5/5 Aug 2020 699 i
5.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
6.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
7.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
8.
 
Olympus E-M15/5+ +84/1004.5/54.5/5 Sep 2013 1,399i
9.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
10.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
11.
 
Panasonic GH54.5/5+ +85/1004.5/55/5 Jan 2017 1,999 i
12.
 
Panasonic GX85/5+82/1004.5/54.5/5 Jul 2015 1,199i
13.
 
Sony A7C3.5/5..86/1004/54/5 Sep 2020 1,799 i
14.
 
Sony A6100....82/1004/55/5 Aug 2019 749 i
15.
 
Sony A63004.5/5+85/1005/55/5 Feb 2016 999i
16.
 
Sony A51004.5/5+..4.5/55/5 Aug 2014 549 i
17.
 
Sony A60005/5+80/1004.5/55/5 Feb 2014 599i
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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Olympus E-M1 III:
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Sony A6400:
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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 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 A6400

    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 A6400
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date February 2020 January 2019
    Launch Price USD 1,799 USD 899
    Sensor Specs Olympus E-M1 III Sony A6400
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 23.5 x 15.6 mm
    Sensor Area 224.9 mm2 366.6 mm2
    Sensor Diagonal 21.6 mm 28.2 mm
    Crop Factor 2.0x 1.5x
    Sensor Resolution 20.2 Megapixels 24 Megapixels
    Image Resolution 5184 x 3888 pixels 6000 x 4000 pixels
    Pixel Pitch 3.34 μm 3.91 μm
    Pixel Density 8.96 MP/cm2 6.55 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 32,000 ISO
    ISO Boost 64 - 25,600 ISO 100 - 102,400 ISO
    Image Processor TruePic IX BIONZ X
    DXO Sensor Quality (score) .. 83
    DXO Color Depth (bits) .. 24
    DXO Dynamic Range (EV) .. 13.6
    DXO Low Light (ISO) .. 1431
    Screen Specs Olympus E-M1 III Sony A6400
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.83x 0.70x
    Viewfinder Resolution 2360k dots 2359k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1037k dots 922k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M1 III Sony A6400
    Focus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 18 shutter flaps/s 11 shutter flaps/s
    Shutter Life Expectancy400 000 actuations200 000 actuations
    Electronic Shutterup to 1/32000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash Build-in 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 A6400
    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 no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Olympus E-M1 III Sony A6400
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLH-1 NP-FW50
    Battery Life (CIPA)420 shots per charge410 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)
    120 x 67 x 50 mm
    (4.7 x 2.6 x 2.0 in)
    Camera Weight 580 g (20.5 oz) 403 g (14.2 oz)

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