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Olympus E-M1X vs Canon 5D Mark III

The Olympus OM-D E-M1X and the Canon EOS 5D Mark III are two digital cameras that were officially introduced, respectively, in January 2019 and March 2012. The E-M1X is a mirrorless interchangeable lens camera, while the 5D Mark III is a DSLR. The cameras are based on a Four Thirds (E-M1X) and a full frame (5D Mark III) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Canon provides 22.1 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
versus
Canon 5D Mark III
Olympus E-M1X   Canon 5D Mark III
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Canon EF mount lenses
20.2 MP – Four Thirds sensor 22.1 MP – Full Frame sensor
4K/30p Video 1080/30p Video
ISO 200-25,600 ISO 100-25,600 (50 - 102,400)
Electronic viewfinder (2360k dots) Optical viewfinder
3.0" LCD – 1037k dots 3.2" LCD – 1040k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
18 shutter flaps per second 6 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
870 shots per battery charge950 shots per battery charge
144 x 147 x 75 mm, 997 g 152 x 116 x 76 mm, 950 g
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Check E-M1X offers at
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Check 5D Mark III offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1X and the Canon EOS 5D 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Olympus E-M1X and the Canon 5D Mark III. 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 measures are rounded to the nearest millimeter.

The E-M1X can be obtained in two different colors (black, silver), while the 5D Mark III is only available in black.

Size Olympus E-M1X vs Canon 5D Mark III
Compare E-M1X versus 5D Mark III top
Comparison E-M1X or 5D Mark III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 5D Mark III is notably smaller (17 percent) than the Olympus E-M1X. Moreover, the 5D Mark III is markedly lighter (5 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 Canon EF Lens Catalog (5D Mark III). Mirrorless cameras, such as the Olympus E-M1X, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.

Concerning battery life, the E-M1X gets 870 shots out of its Olympus BLH-1 battery, while the 5D Mark III can take 950 images on a single charge of its Canon LP-E6 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 5D Mark III, Canon provides the BG-E11 vertical grip as an optional accessory (see here on ebay). The power pack in the E-M1X can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999ebay.com
2.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499ebay.com
3.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499ebay.com
4.
 
Canon 5D Mark IV 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 amazon.com
5.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
6.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
7.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999ebay.com
8.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399ebay.com
9.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999ebay.com
10.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799ebay.com
11.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099ebay.com
12.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199ebay.com
13.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 amazon.com
14.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999ebay.com
15.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999ebay.com
16.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999ebay.com
17.
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 Y Feb 2019 2,499 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-M1X was launched at a somewhat lower price (by 14 percent) than the 5D Mark III, which makes it more attractive for photographers on a tight budget. 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

The size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and 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 Canon 5D Mark III a full frame sensor. The sensor area in the 5D Mark III is 284 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 5D Mark III offers a 3:2 aspect.

Olympus E-M1X and Canon 5D Mark III sensor measures

With 22.1MP, the 5D Mark III offers a higher resolution than the E-M1X (20.2MP), but the 5D Mark III nevertheless has larger individual pixels (pixel pitch of 6.25μm versus 3.34μm for the E-M1X) due to its larger sensor. However, the E-M1X is a much more recent model (by 6 years and 10 months) than the 5D Mark III, 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 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 Canon 5D Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 5D Mark III for good quality output (200 dots per inch) amounts to 28.8 x 19.2 inches or 73.2 x 48.8 cm, for very good quality (250 dpi) 23 x 15.4 inches or 58.5 x 39 cm, and for excellent quality (300 dpi) 19.2 x 12.8 inches or 48.8 x 32.5 cm. The corresponding values for the Olympus E-M1X 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.

The E-M1X has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the 5D Mark III, 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 Canon EOS 5D Mark III are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

E-M1X versus 5D Mark III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p23.213.0125475
2.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
3.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
4.
 
Canon 5D Mark IV Full Frame 30.1 6720 44804K/30p24.813.6299591
5.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
6.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
7.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
8.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
9.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
10.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
11.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
12.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
13.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
14.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p23.213.0127375
15.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
16.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
17.
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the E-M1X provides a higher video resolution than the 5D Mark III. It can shoot video footage at 4K/30p, while the Canon is limited to 1080/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-M1X has an electronic viewfinder (2360k dots), while the 5D 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-M1X has a higher magnification than the one of the 5D Mark III (0.83x vs 0.71x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Olympus E-M1X and Canon 5D Mark III in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Olympus E-M1X2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
2.
 
Canon 5D Mark IIIoptical Y3.2 / 1040 fixed n 1/8000s 6.0/s n n
3.
 
Canon 5D Mark IIoptical Y3.0 / 920 fixed n 1/8000s 3.9/s n n
4.
 
Canon 5D Mark IVoptical Y3.2 / 1620 fixed Y 1/8000s 7.0/s n n
5.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
6.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
7.
 
Nikon D610optical Y3.2 / 921 fixed n 1/4000s 6.0/s Y n
8.
 
Olympus E-M12360 n3.0 / 1037 tilting Y 1/8000s 10.0/s n Y
9.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
10.
 
Olympus E-M1 III2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
11.
 
Olympus E-M5 II2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
12.
 
Olympus E-M5 III2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
13.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0/s Y Y
14.
 
Panasonic G902360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
15.
 
Panasonic G952360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
16.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n Y
17.
 
Panasonic S15760 Y3.2 / 2100 full-flex Y 1/8000s 9.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the E-M1X and the 5D Mark III is in-body image stabilization (IBIS). The E-M1X reduces the risk of handshake-induced blur with all attached lenses, while the 5D Mark III offers no blur reduction with lenses that themselves do not provide optical image stabilization.

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 5D 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-M1X 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 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 5D Mark III uses Compact Flash or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The E-M1X supports UHS-II cards (on both slots), while the 5D Mark III cannot take advantage of Ultra High Speed SD cards.

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Olympus OM-D E-M1X and Canon EOS 5D Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-M1XYstereo / monoYYmicro3.0Y-Y
2.
 
Canon 5D Mark IIIYmono / monoYYmini2.0---
3.
 
Canon 5D Mark IIYmono / monoY-mini2.0---
4.
 
Canon 5D Mark IVYmono / monoYYmini3.0YY-
5.
 
Canon 5DSYmono / monoY-mini3.0---
6.
 
Canon 5DS RYmono / monoY-mini3.0---
7.
 
Nikon D610Ymono / monoYYmini2.0---
8.
 
Olympus E-M1Ystereo / monoY-micro2.0Y--
9.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
10.
 
Olympus E-M1 IIIYstereo / monoYYmicro3.1Y-Y
11.
 
Olympus E-M5 IIYstereo / monoY-micro2.0Y--
12.
 
Olympus E-M5 IIIYstereo / monoY-micro2.0Y-Y
13.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
14.
 
Panasonic G90Ystereo / monoYYmicro2.0Y-Y
15.
 
Panasonic G95Ystereo / monoYYmicro2.0Y-Y
16.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
17.
 
Panasonic S1Ystereo / monoYYfull3.1Y-Y

It is notable that the E-M1X offers wifi support, while the 5D Mark III does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

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 E-M1X has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the E-M1X and the 5D Mark III have been discontinued, but can regularly be found used on ebay. The 5D Mark III was replaced by the Canon 5D Mark IV, while the E-M1X does not have a direct successor. Further information on the features and operation of the E-M1X and 5D Mark III can be found, respectively, in the Olympus E-M1X Manual (free pdf) or the online Canon 5D Mark III Manual.

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Review summary

So what conclusions can be drawn? Is the Olympus E-M1X better than the Canon 5D Mark III 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.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.71x).
  • 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 6 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • 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.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards on both slots.
  • More affordable: Was introduced into a lower priced segment (14 percent cheaper at launch).
  • More modern: Reflects 6 years and 10 months of technical progress since the 5D Mark III launch.

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Advantages of the Canon EOS 5D Mark III:

  • More detail: Has more megapixels (22.1 vs 20.2MP), which boosts linear resolution by 7%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More compact: Is smaller (152x116mm vs 144x147mm) and will fit more readily into a bag.
  • More heavily discounted: Has been around for much longer (launched in March 2012).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1X is the clear winner of the match-up (23 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

E-M1X 23:07 5D Mark III

How about other alternatives? Do the specifications of the Olympus E-M1X and the Canon 5D Mark III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 E-M1X and the 5D Mark III in practical situations. 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 why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1X4.5/5o5/585/1004.5/5.. Jan 2019 2,999ebay.com
2.
 
Canon 5D Mark III..+ +..82/1004.5/54.5/5 Mar 2012 3,499ebay.com
3.
 
Canon 5D Mark II4/591/100..79/1004/5.. Sep 2008 3,499ebay.com
4.
 
Canon 5D Mark IV4.5/5+ +4/587/1004.5/54.5/5 Aug 2016 3,499 amazon.com
5.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699ebay.com
6.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
7.
 
Nikon D6104/5+ +..87/1004.5/54.5/5 Oct 2013 1,999ebay.com
8.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 1,399ebay.com
9.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 1,999ebay.com
10.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 1,799ebay.com
11.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 1,099ebay.com
12.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 1,199ebay.com
13.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 699 amazon.com
14.
 
Panasonic G904.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999ebay.com
15.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999ebay.com
16.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 1,999ebay.com
17.
 
Panasonic S14.5/5+ +4.5/588/1004.5/54/5 Feb 2019 2,499 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Check 5D Mark III offers at
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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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Olympus E-M1X vs Canon 5D Mark 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 Olympus E-M1X Canon 5D Mark III
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Canon EF mount lenses
    Launch Date January 2019 March 2012
    Launch Price USD 2,999 USD 3,499
    Sensor Specs Olympus E-M1X Canon 5D Mark III
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 36.0 x 24.0 mm
    Sensor Area 224.9 mm2 864 mm2
    Sensor Diagonal 21.6 mm 43.3 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 22.1 Megapixels
    Image Resolution 5184 x 3888 pixels 5760 x 3840 pixels
    Pixel Pitch 3.34 μm 6.25 μm
    Pixel Density 8.96 MP/cm2 2.56 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 1080/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 25,600 ISO
    ISO Boost 64 - 25,600 ISO 50 - 102,400 ISO
    Image Processor Dual TruePic VIII DIGIC 5+
    DXO Sensor Quality (score) .. 81
    DXO Color Depth (bits) .. 24.0
    DXO Dynamic Range (EV) .. 11.7
    DXO Low Light (ISO) .. 2293
    Screen Specs Olympus E-M1X Canon 5D Mark III
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.83x 0.71x
    Viewfinder Resolution 2360k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1037k dots 1040k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-M1X Canon 5D Mark III
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 18 shutter flaps/s 6 shutter flaps/s
    Shutter Life Expectancy200 000 actuations150 000 actuations
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards CF or SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    UHS card support Dual UHS-II no
    Connectivity Specs Olympus E-M1X Canon 5D Mark III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Geotagging GPS built-in no internal GPS
    Body Specs Olympus E-M1X Canon 5D Mark III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Olympus BLH-1 Canon LP-E6
    Battery Life (CIPA)870 shots per charge950 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 144 x 147 x 75 mm
    (5.7 x 5.8 x 3.0 in)
    152 x 116 x 76 mm
    (6.0 x 4.6 x 3.0 in)
    Camera Weight 997 g (35.2 oz) 950 g (33.5 oz)
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