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Canon 1D X Mark III vs Olympus E-M1 III

The Canon EOS-1D X Mark III and the Olympus OM-D E-M1 Mark III are two digital cameras that were officially introduced, respectively, in January 2020 and February 2020. The 1DX Mark III is a DSLR, while the E-M1 III is a mirrorless interchangeable lens camera. The cameras are based on a full frame (1DX Mark III) and a Four Thirds (E-M1 III) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 20.2 MP.

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

Headline Specifications
Canon 1D X Mark III VS Olympus E-M1 III
Canon 1D X Mark III Olympus E-M1 III
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
20 MP, Full Frame Sensor 20.2 MP, Four Thirds Sensor
4K/60p Video 4K/30p Video
ISO 100-102400 (50-819200) ISO 200-25600
Optical viewfinder Electronic viewfinder (2360k dots)
3.2" LCD, 2100k dots 3.0" LCD, 1037k dots
Fixed touchscreen Swivel touchscreen
20 shutter flaps per second 18 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
2850 shots per battery charge420 shots per battery charge
158 x 168 x 83 mm, 1440 g 134 x 91 x 69 mm, 580 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D X Mark III and the Olympus OM-D E-M1 Mark III? 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 Canon 1D X Mark III and the Olympus E-M1 III 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.

Size Canon 1D X Mark III vs Olympus E-M1 III
Compare 1DX Mark III versus E-M1 III top
Comparison 1DX Mark III or E-M1 III 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 is considerably smaller (54 percent) than the Canon 1D X Mark III. Moreover, the E-M1 III is substantially lighter (60 percent) than the 1DX Mark 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 Canon EF Lens Catalog (1DX Mark III) and the Micro Four Thirds Lens Catalog (E-M1 III). Mirrorless cameras, such as the E-M1 III, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 1DX Mark III gets 2850 shots out of its LP-E19 battery, while the E-M1 III can take 420 images on a single charge of its BLH-1 power pack. As can be seen in the images above, the 1DX Mark III 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 E-M1 III, Olympus provides the HLD-9 vertical grip as an optional accessory (see here on eBay). The power pack in the E-M1 III can be charged via the USB port, 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)
Camera
Model
 
Canon 1D X Mark III» 6.2 in 6.6 in 3.3 in 50.8 oz 2850 Y Jan 2020 6,499 iCanon 1D X Mark III
 
Olympus E-M1 III« 5.3 in 3.6 in 2.7 in 20.5 oz 420 Y Feb 2020 1,799 iOlympus E-M1 III
 
Canon 1D X Mark II« » 6.2 in 6.6 in 3.3 in 54.0 oz 1210 Y Feb 2016 5,999iCanon 1D X Mark II
 
Canon 1D C« » 6.2 in 6.5 in 3.3 in 54.5 oz 1120 Y Apr 2012 14,999iCanon 1D C
 
Canon 5D Mark III« » 6.0 in 4.6 in 3.0 in 33.5 oz 950 Y Mar 2012 3,499iCanon 5D Mark III
 
Canon 6D« » 5.7 in 4.4 in 2.8 in 27.2 oz 1090 Y Sep 2012 2,099iCanon 6D
 
Canon 1D X« » 6.2 in 6.6 in 3.3 in 54.7 oz 1120 Y Oct 2011 6,799iCanon 1D X
 
Canon 5D Mark II« » 6.0 in 4.5 in 3.0 in 30.0 oz 850 Y Sep 2008 3,499iCanon 5D Mark II
 
Canon 1Ds Mark III« » 5.9 in 6.3 in 3.1 in 48.9 oz 1800 Y Aug 2007 7,999iCanon 1Ds Mark III
 
Canon 1Ds Mark II« » 6.1 in 6.2 in 3.1 in 42.9 oz 1200 Y Sep 2004 7,999iCanon 1Ds Mark II
 
Nikon D6« » 6.3 in 6.4 in 3.6 in 44.8 oz 3580 Y Feb 2020 6,499 iNikon D6
 
Nikon D5« » 6.3 in 6.3 in 3.6 in 49.9 oz 3780 Y Jan 2016 6,499iNikon D5
 
Olympus E-M5 III« » 4.9 in 3.3 in 2.0 in 14.6 oz 310 Y Oct 2019 1,199 iOlympus E-M5 III
 
Olympus E-M1X« » 5.7 in 5.8 in 3.0 in 35.2 oz 870 Y Jan 2019 2,999 iOlympus E-M1X
 
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 iOlympus E-M1 II
 
Panasonic G95« » 5.1 in 3.7 in 3.0 in 18.9 oz 290 Y Apr 2019 999 iPanasonic G95
 
Panasonic G9« » 5.4 in 3.8 in 3.6 in 23.2 oz 400 Y Nov 2017 1,699 iPanasonic G9
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-M1 III was launched at a markedly lower price (by 72 percent) than the 1DX Mark III, 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.

 

Sensor comparison

The size of the imaging sensor is a crucial determinant 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. 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 Canon 1D X Mark III features a full frame sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 III is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the 1DX Mark III has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.

Canon 1D X Mark III and Olympus E-M1 III sensor measures

Despite having a smaller sensor, the E-M1 III offers a slightly higher resolution of 20.2 megapixels, compared with 20 MP of the 1DX Mark III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 6.57μm for the 1DX Mark III). It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation. 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.

Unlike the 1DX Mark III, 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 Canon EOS-1D X Mark III has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-819200. The corresponding ISO settings for the Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

1DX Mark III versus E-M1 III MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Canon 1D X Mark III Full Frame 20.0 5472 36484K/60p23.413.4244583Canon 1D X Mark III
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........Olympus E-M1 III
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788Canon 1D X Mark II
 
Canon 1D C Full Frame 17.9 5184 34564K/24p........Canon 1D C
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082Canon 6D
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682Canon 1D X
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579Canon 5D Mark II
 
Canon 1Ds Mark III Full Frame 21.0 5616 3744none24.012.0166380Canon 1Ds Mark III
 
Canon 1Ds Mark II Full Frame 16.6 4992 3328none23.311.3148074Canon 1Ds Mark II
 
Nikon D6 Full Frame 20.7 5568 37124K/30p........Nikon D6
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388Nikon D5
 
Olympus E-M5 III Four Thirds 20.2 5184 38884k/24p........Olympus E-M5 III
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........Olympus E-M1X
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........Panasonic G95
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........Panasonic G9

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, but the 1DX Mark III provides a higher frame rate than the E-M1 III. It can shoot video footage at 4K/60p, while the Olympus is limited to 4K/30p.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M1 III has an electronic viewfinder (2360k dots), while the 1DX Mark III has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the E-M1 III has a higher magnification than the one of the 1DX Mark III (0.83x vs 0.76x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 1D X Mark III, the Olympus E-M1 III, 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
 
Canon 1D X Mark IIIoptical Y 3.2 2100 fixed Y 1/8000s 20.0 n n Canon 1D X Mark III
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1 III
 
Canon 1D X Mark IIoptical Y 3.2 1620 fixed Y 1/8000s 16.0 n n Canon 1D X Mark II
 
Canon 1D Coptical Y 3.2 1040 fixed n 1/8000s 14.0 n n Canon 1D C
 
Canon 5D Mark IIIoptical Y 3.2 1040 fixed n 1/8000s 6.0 n n Canon 5D Mark III
 
Canon 6Doptical Y 3.0 1040 fixed n 1/4000s 4.5 n n Canon 6D
 
Canon 1D Xoptical Y 3.2 1040 fixed n 1/8000s 14.0 n n Canon 1D X
 
Canon 5D Mark IIoptical Y 3.0 920 fixed n 1/8000s 3.9 n n Canon 5D Mark II
 
Canon 1Ds Mark IIIoptical Y 3.0 230 fixed n 1/8000s 5.0 n n Canon 1Ds Mark III
 
Canon 1Ds Mark IIoptical Y 2.0 230 fixed n 1/8000s 4.0 n n Canon 1Ds Mark II
 
Nikon D6optical Y 3.2 2359 fixed Y 1/8000s 14.0 n n Nikon D6
 
Nikon D5optical Y 3.2 2359 fixed Y 1/8000s 14.0 n n Nikon D5
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Olympus E-M5 III
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1X
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y Olympus E-M1 II
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y Panasonic G95
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y Panasonic G9

One feature that is present on the 1DX Mark III, but is missing on the E-M1 III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The E-M1 III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 1DX Mark III 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, the E-M1 III is one of those camera that have an additional 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 Canon 1D X Mark III and the Olympus E-M1 III both have 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 1DX Mark III writes its imaging data to CFexpress cards, while the E-M1 III uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

 

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 Canon EOS-1D X Mark III and Olympus OM-D E-M1 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Canon 1D X Mark IIIYmonomonoYYmini3.1Y-YCanon 1D X Mark III
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-YOlympus E-M1 III
 
Canon 1D X Mark IIYmonomonoYYmini3.0---Canon 1D X Mark II
 
Canon 1D CYmonomonoYYmini2.0---Canon 1D C
 
Canon 5D Mark IIIYmonomonoYYmini2.0---Canon 5D Mark III
 
Canon 6DYmonomonoY-mini2.0Y--Canon 6D
 
Canon 1D XYmonononeY-mini2.0---Canon 1D X
 
Canon 5D Mark IIYmonomonoY-mini2.0---Canon 5D Mark II
 
Canon 1Ds Mark IIIYnonenone--none2.0---Canon 1Ds Mark III
 
Canon 1Ds Mark IIYnonenone--none2.0---Canon 1Ds Mark II
 
Nikon D6YstereomonoYYmini3.1Y-YNikon D6
 
Nikon D5YstereomonoYYmini3.0---Nikon D5
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-YOlympus E-M5 III
 
Olympus E-M1XYstereomonoYYmicro3.0Y-YOlympus E-M1X
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--Olympus E-M1 II
 
Panasonic G95YstereomonoYYmicro2.0Y-YPanasonic G95
 
Panasonic G9YstereomonoYYfull3.0Y-YPanasonic G9

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Travel and landscape photographers will find it useful that the 1DX Mark III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 1DX Mark III and the E-M1 III are recent models that are part of the current product line-up. The 1DX Mark III replaced the earlier Canon 1DX Mark II, 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 Canon and Olympus websites.

Review summary

So how do things add up? Which of the two cameras – the Canon 1D X Mark III or the Olympus E-M1 III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS-1D X Mark III:

  • 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.
  • Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1037k dots).
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (2850 versus 420) on a single battery charge.
  • Easier geotagging: Features an internal GPS sensor to log localization data.

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Arguments in favor of 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.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.76x).
  • More flexible LCD: Has a 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.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (134x91mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 860g or 60 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced category (72 percent cheaper at launch).

If the count of relative strengths (bullet points above) is taken as a measure, the 1DX Mark III comes out slightly ahead of the E-M1 III (13 : 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 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.

1DX Mark III 13:12 E-M1 III

How about other alternatives? Do the specifications of the Canon 1D X Mark III and the Olympus E-M1 III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings 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 1DX Mark III and the E-M1 III 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 adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Review Scores
  Camera
Model
cam
era
  labs  
dp
re
  view  
e
photo
  zine  
ima
ging
resource
photo
graphy
  blog  
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Canon 1D X Mark III+ +........ Jan 2020 6,499 iCanon 1D X Mark III
 
Olympus E-M1 III....4.5/5..4/5 Feb 2020 1,799 iOlympus E-M1 III
 
Canon 1D X Mark II..89/1004.5/55/54.5/5 Feb 2016 5,999iCanon 1D X Mark II
 
Canon 1D C.......... Apr 2012 14,999iCanon 1D C
 
Canon 5D Mark III+ +82/1004.5/55/54.5/5 Mar 2012 3,499iCanon 5D Mark III
 
Canon 6D+ +83/1004.5/54.5/54.5/5 Sep 2012 2,099iCanon 6D
 
Canon 1D X....4.5/54.5/54.5/5 Oct 2011 6,799iCanon 1D X
 
Canon 5D Mark II91/10079/1004/55/5.. Sep 2008 3,499iCanon 5D Mark II
 
Canon 1Ds Mark III..+ +4.5/5.... Aug 2007 7,999iCanon 1Ds Mark III
 
Canon 1Ds Mark II..+ +...... Sep 2004 7,999iCanon 1Ds Mark II
 
Nikon D6........4.5/5 Feb 2020 6,499 iNikon D6
 
Nikon D5..89/1004.5/55/55/5 Jan 2016 6,499iNikon D5
 
Olympus E-M5 III+82/1004.5/5..4.5/5 Oct 2019 1,199 iOlympus E-M5 III
 
Olympus E-M1Xo..4.5/55/5.. Jan 2019 2,999 iOlympus E-M1X
 
Olympus E-M1 II+ +85/1004.5/55/54.5/5 Sep 2016 1,999 iOlympus E-M1 II
 
Panasonic G95+83/1004.5/54.5/54.5/5 Apr 2019 999 iPanasonic G95
 
Panasonic G9+ +85/1005/55/55/5 Nov 2017 1,699 iPanasonic G9
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, 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 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.

Canon 1D X Mark III:
Check Amazon price
Olympus E-M1 III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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: Canon 1D X Mark III vs Olympus E-M1 III

    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 Canon 1D X Mark III Olympus E-M1 III
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date January 2020 February 2020
    Launch Price USD 6499 USD 1799
    Sensor Specs Canon 1D X Mark III Olympus E-M1 III
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 36.0 x 24.0 mm 17.3 x 13.0 mm
    Sensor Area 864 mm2 224.9 mm2
    Sensor Diagonal 43.3 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 20 Megapixels 20.2 Megapixels
    Image Resolution 5472 x 3648 pixels 5184 x 3888 pixels
    Pixel Pitch 6.57 μm 3.34 μm
    Pixel Density 2.31 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/60p Video 4K/30p Video
    ISO Setting 100-102400 ISO 200-25600 ISO
    ISO Boost 50-819200 ISO 64-25600 ISO
    Image Processor DIGIC X TruePic IX
    DXO Sensor Quality (score) 83 ..
    DXO Color Depth (bits) 23.4 ..
    DXO Dynamic Range (EV) 13.4 ..
    DXO Low Light (ISO) 2445 ..
    Screen Specs Canon 1D X Mark III Olympus E-M1 III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.83x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2 inch 3.0 inch
    LCD Resolution 2100k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 1D X Mark III Olympus E-M1 III
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/8000/s
    Continuous Shooting 20 shutter flaps/s 18 shutter flaps/s
    Shutter Life Expectancy500 000 actuations400 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CFexpress cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    Connectivity Specs Canon 1D X Mark III Olympus E-M1 III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 3.1
    HDMI Port mini 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
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Canon 1D X Mark III Olympus E-M1 III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E19 BLH-1
    Battery Life (CIPA)2850 shots per charge420 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 158 x 168 x 83 mm
    (6.2 x 6.6 x 3.3 in)
    134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    Camera Weight 1440 g (50.8 oz) 580 g (20.5 oz)

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