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Olympus E-M1X vs Sony A9

The Olympus OM-D E-M1X and the Sony Alpha A9 are two digital cameras that were revealed to the public, respectively, in January 2019 and April 2017. Both the E-M1X and the A9 are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1X) and a full frame (A9) 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-M1X   Sony A9
Olympus E-M1X Sony A9
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP, Four Thirds Sensor 24 MP, Full Frame Sensor
4K/30p Video 4K/30p Video
ISO 200-25600 ISO 100-51200 (50-204800)
Electronic viewfinder (2360k dots) Electronic viewfinder (3686k dots)
3.0" LCD, 1037k dots 3.0" LCD, 1440k dots
Swivel touchscreen Tilting touchscreen
18 shutter flaps per second 20 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
870 shots per battery charge650 shots per battery charge
144 x 147 x 75 mm, 997 g 127 x 96 x 63 mm, 673 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1X and the Sony Alpha A9? 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: Olympus E-M1X vs Sony A9

The physical size and weight of the Olympus E-M1X and the Sony A9 are illustrated 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.

The E-M1X can be obtained in two different colors (black, silver), while the A9 is only available in black.

Size Olympus E-M1X vs Sony A9
Compare E-M1X versus A9 top
Comparison E-M1X or A9 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A9 is considerably smaller (42 percent) than the Olympus E-M1X. Moreover, the A9 is markedly lighter (32 percent) than the E-M1X. 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-M1X) and the Sony FE Lens Catalog (A9). 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-M1X gets 870 shots out of its BLH-1 battery, while the A9 can take 650 images on a single charge of its NP-FZ100 power pack. As can be seen in the images above, the E-M1X has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the A9, Sony provides the VG-C3EM vertical grip as an optional accessory (see here on eBay). The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

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)
Used
Price
(USD)
Camera
Model
 
Olympus E-M1X» 5.7 in 5.8 in 3.0 in 35.2 oz 870 Y Jan 2019 2,999 i i Olympus E-M1X
 
Sony A9« 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i Sony A9
 
Nikon Z6« » 5.3 in 4.0 in 2.6 in 23.8 oz 310 Y Aug 2018 1,999 i i Nikon Z6
 
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 i i Olympus E-M1 II
 
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 i i Olympus PEN-F
 
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099 i i Olympus E-M5 II
 
Olympus E-M1« » 5.1 in 3.7 in 2.5 in 17.5 oz 350 Y Sep 2013 1,399- i Olympus E-M1
 
Panasonic S1« » 5.9 in 4.3 in 3.8 in 35.9 oz 400 Y Feb 2019 2,499 i i Panasonic S1
 
Panasonic G90« » 5.1 in 3.7 in 3.0 in 18.9 oz 290 Y Apr 2019 999 i i Panasonic G90
 
Panasonic G95« » 5.1 in 3.7 in 3.0 in 18.9 oz 290 Y Apr 2019 999 i i Panasonic G95
 
Panasonic G9« » 5.4 in 3.8 in 3.6 in 23.2 oz 400 Y Nov 2017 1,699 i i Panasonic G9
 
Panasonic GH5« » 5.5 in 3.9 in 3.4 in 25.6 oz 410 Y Jan 2017 1,999 i i Panasonic GH5
 
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199- i Panasonic GX8
 
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« » 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i Sony A7R III
 
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M1X was launched at a markedly lower price (by 33 percent) than the A9, 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.

 

Sensor comparison: Olympus E-M1X vs Sony A9

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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-M1X features a Four Thirds sensor and the Sony A9 a full frame sensor. The sensor area in the A9 is 276 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-M1X has a native 4:3 aspect ratio, while the one in the A9 offers a 3:2 aspect.

Olympus E-M1X and Sony A9 sensor measures

With 24MP, the A9 offers a higher resolution than the E-M1X (20.2MP), but the A9 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.34μm for the E-M1X) due to its larger sensor. However, the E-M1X is a somewhat more recent model (by 1 year and 9 months) than the A9, 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-M1X has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A9 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Olympus E-M1X are 25.9 x 19.4 inch or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inch or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inch or 43.9 x 32.9 cm for excellent quality prints.

Unlike the A9, the E-M1X 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-M1X 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 A9 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

E-M1X versus A9 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 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-M1X» Four Thirds 20.2 5184 38884K/30p----Olympus E-M1X
 
Sony A9« Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
 
Nikon Z6« » Full Frame 24.3 6048 40244K/30p25.314.3329995Nikon Z6
 
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
 
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-M1« » Four Thirds 15.9 4608 34561080/30p23.012.775773Olympus E-M1
 
Panasonic S1« » Full Frame 24.0 6000 40004K/60p25.214.5333395Panasonic S1
 
Panasonic G90« » Four Thirds 20.2 5184 38884K/30p----Panasonic G90
 
Panasonic G95« » Four Thirds 20.2 5184 38884K/30p----Panasonic G95
 
Panasonic G9« » Four Thirds 20.2 5184 38884K/60p----Panasonic G9
 
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777Panasonic GH5
 
Panasonic GX8« » Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II

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).

 

Feature comparison: Olympus E-M1X vs Sony A9

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A9 offers a substantially higher resolution than the one in the E-M1X (3686k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M1X, the Sony A9, 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-M1X»2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1X
 
Sony A9«3686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y Sony A9
 
Nikon Z6« »3690 Y 3.2 2100 tilting Y 1/8000s 12.0 n Y Nikon Z6
 
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1 II
 
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus PEN-F
 
Olympus E-M5 II« »2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus E-M5 II
 
Olympus E-M1« »2360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y Olympus E-M1
 
Panasonic S1« »5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y Panasonic S1
 
Panasonic G90« »2360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y Panasonic G90
 
Panasonic G95« »2360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y Panasonic G95
 
Panasonic G9« »3680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y Panasonic G9
 
Panasonic GH5« »3680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y Panasonic GH5
 
Panasonic GX8« »2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Panasonic GX8
 
Sony A7 III« »2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y Sony A7 III
 
Sony A7R III« »3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
Sony A7 II« »2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y Sony A7 II
The E-M1X 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 A9 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-M1X 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-M1X writes its imaging data to SDXC cards, while the A9 uses SDXC or Memory Stick PRO Duo cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. However, while the E-M1X supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s) on both slots, the A9 supports UHS-II only on its first slot and UHS-I (data transfer speed up to 104 MB/s) on the second one.

 

Connectivity comparison: Olympus E-M1X vs Sony A9

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-M1X and Sony Alpha A9 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
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Olympus E-M1X»YstereomonoYYmicro3.0Y-YOlympus E-M1X
 
Sony A9«YstereomonoYYmicro2.0YYYSony A9
 
Nikon Z6« »YstereomonoYYmicro3.1Y-YNikon Z6
 
Olympus E-M1 II« »YstereomonoYYmicro3.0Y--Olympus E-M1 II
 
Olympus PEN-F« »Ystereomono--micro2.0Y--Olympus PEN-F
 
Olympus E-M5 II« »YstereomonoY-micro2.0Y--Olympus E-M5 II
 
Olympus E-M1« »YstereomonoY-micro2.0Y--Olympus E-M1
 
Panasonic S1« »YstereomonoYYfull3.1Y-YPanasonic S1
 
Panasonic G90« »YstereomonoYYmicro2.0Y-YPanasonic G90
 
Panasonic G95« »YstereomonoYYmicro2.0Y-YPanasonic G95
 
Panasonic G9« »YstereomonoYYfull3.0Y-YPanasonic G9
 
Panasonic GH5« »YstereomonoYYfull3.1Y-YPanasonic GH5
 
Panasonic GX8« »YstereomonoY-micro2.0YY-Panasonic GX8
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A7R III« »YstereomonoYYmicro3.1YYYSony A7R III
 
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II

Studio photographers will appreciate that the Olympus E-M1X (unlike the A9) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-M1X and the A9 are recent models that are part of the current product line-up. Neither of the two has a direct predecessor, so perhaps they will constitute the origins of new camera lines for Olympus and Sony. 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: Olympus E-M1X vs Sony A9

So how do things add up? Is the Olympus E-M1X better than the Sony A9 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Olympus OM-D E-M1X:

  • 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.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.78x).
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (870 versus 650) on a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More affordable: Was introduced into a lower priced category (33 percent cheaper at launch).
  • More modern: Is somewhat more recent (announced 1 year and 9 months after the A9).

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Reasons to prefer the Sony Alpha A9:

  • 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 detailed viewfinder: Has higher resolution electronic viewfinder (3686k vs 2360k dots).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1037k dots).
  • More compact: Is smaller (127x96mm vs 144x147mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 324g or 32 percent) and is thus easier to take along.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been on the market for longer (launched in April 2017).

If the number of relative strengths (bullet points above) is taken as a guide, the match-up finishes in a tie (12 points each). 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

E-M1X 12:12 A9

How about other alternatives? Do the specifications of the Olympus E-M1X and the Sony A9 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the E-M1X and the A9 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: Olympus E-M1X vs Sony A9

This is why hands-on reviews by experts are important. 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
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Olympus E-M1X»o-4.5/5-- Jan 2019 2,999 i i Olympus E-M1X
 
Sony A9«+ +89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
 
Nikon Z6« »--4.5/5-5/5 Aug 2018 1,999 i i Nikon Z6
 
Olympus E-M1 II« »+ +85/1004.5/55/54.5/5 Sep 2016 1,999 i i Olympus E-M1 II
 
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i Olympus PEN-F
 
Olympus E-M5 II« »+ +81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
 
Olympus E-M1« »+ +84/1004.5/54.5/54.5/5 Sep 2013 1,399- i Olympus E-M1
 
Panasonic S1« »+ +---4/5 Feb 2019 2,499 i i Panasonic S1
 
Panasonic G90« »+-4.5/5-4.5/5 Apr 2019 999 i i Panasonic G90
 
Panasonic G95« »+-4.5/5-4.5/5 Apr 2019 999 i i Panasonic G95
 
Panasonic G9« »+ +85/1005/55/55/5 Nov 2017 1,699 i i Panasonic G9
 
Panasonic GH5« »+ +85/1004.5/55/55/5 Jan 2017 1,999 i i Panasonic GH5
 
Panasonic GX8« »+82/1004.5/55/54.5/5 Jul 2015 1,199- i Panasonic GX8
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« »+ +90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
 
Sony A7 II« »+82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Olympus E-M1X:
Check Amazon price
Sony A9:
Check Amazon price

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. 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-M1X vs Sony A9

    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-M1X Sony A9
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date January 2019 April 2017
    Launch Price USD 2999 USD 4499
    Sensor Specs Olympus E-M1X Sony A9
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.6 x 23.8 mm
    Sensor Area 224.9 mm2 847.28 mm2
    Sensor Diagonal 21.6 mm 42.8 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 24 Megapixels
    Image Resolution 5184 x 3888 pixels 6000 x 4000 pixels
    Pixel Pitch 3.34 μm 5.94 μm
    Pixel Density 8.96 MP/cm2 2.83 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200-25600 ISO 100-51200 ISO
    ISO Boost 64-25600 ISO 50-204800 ISO
    Image Processor Dual TruePic VIII BIONZ X
    DXO Sensor Quality (score) .. 92
    DXO Color Depth (bits) .. 24.9
    DXO Dynamic Range (EV) .. 13.3
    DXO Low Light (ISO) .. 3517
    Screen Specs Olympus E-M1X Sony A9
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.83x 0.78x
    Viewfinder Resolution 2360k dots 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1037k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M1X Sony A9
    Autofocus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/8000/s
    Continuous Shooting 18 shutter flaps/s 20 shutter flaps/s
    Shutter Life Expectancy200 000 actuations500 000 actuations
    Electronic Shutterup to 1/32000sup to 1/32000s
    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 Dual card slots
    UHS card support Dual UHS-II Single UHS-II
    Connectivity Specs Olympus E-M1X Sony A9
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 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 Bluetooth built-in
    Geotagging GPS built-in
    Body Specs Olympus E-M1X Sony A9
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLH-1 power pack NP-FZ100 power pack
    Battery Life (CIPA)870 shots per charge650 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 144 x 147 x 75 mm
    (5.7 x 5.8 x 3.0 in)
    127 x 96 x 63 mm
    (5.0 x 3.8 x 2.5 in)
    Camera Weight 997 g (35.2 oz) 673 g (23.7 oz)

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