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Canon 5D Mark III vs Olympus E-M1 III

The Canon EOS 5D Mark III and the Olympus OM-D E-M1 Mark III are two digital cameras that were revealed to the public, respectively, in March 2012 and February 2020. The 5D Mark III is a DSLR, while the E-M1 III is a mirrorless interchangeable lens camera. The cameras are based on a full frame (5D Mark III) and a Four Thirds (E-M1 III) sensor. The Canon has a resolution of 22.1 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 5D Mark III versus Olympus E-M1 III
Canon 5D Mark III Olympus E-M1 III
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
22.1 MP, Full Frame Sensor 20.2 MP, Four Thirds Sensor
1080/30p Video 4K/30p Video
ISO 100-25,600 (50 - 102,400) ISO 200-25,600
Optical viewfinder Electronic viewfinder (2360k dots)
3.2 LCD, 1040k dots 3.0 LCD, 1037k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
6 shutter flaps per second 18 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
950 shots per battery charge420 shots per battery charge
152 x 116 x 76 mm, 950 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 5D 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

An illustration of the physical size and weight of the Canon 5D Mark III and the Olympus E-M1 III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

Size Canon 5D Mark III vs Olympus E-M1 III
Compare 5D Mark III versus E-M1 III top
Comparison 5D 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 (31 percent) than the Canon 5D Mark III. Moreover, the E-M1 III is substantially lighter (39 percent) than the 5D 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 (5D 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 5D Mark III gets 950 shots out of its LP-E6 battery, while the E-M1 III can take 420 images on a single charge of its BLH-1 power pack. The power pack in the E-M1 III can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 5D Mark III 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499i
2.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
3.
 
Canon 5D Mark IV 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 i
4.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
5.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
6.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099i
7.
 
Canon 5D Mark II 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499i
8.
 
Canon 5D 152 mm 113 mm 75 mm 895 g 400 Y Aug 2005 3,299i
9.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999 i
10.
 
Nikon D600 141 mm 113 mm 82 mm 850 g 900 Y Sep 2012 2,099i
11.
 
Nikon D800 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 2,999i
12.
 
Nikon D800E 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 3,299i
13.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
14.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
15.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
16.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
17.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M1 III was launched at a markedly lower price (by 49 percent) than the 5D Mark 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. 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 5D 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 5D Mark III has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.

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

Canon 5D Mark III and Olympus E-M1 III sensor measures

With 22.1MP, the 5D Mark III offers a slightly higher resolution than the E-M1 III (20.2MP), but the 5D Mark III nevertheless has larger individual pixels (pixel pitch of 6.25μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a much more recent model (by 7 years and 11 months) than the 5D Mark III, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 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-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.

The E-M1 III 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-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 5D Mark III has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-102400. 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.

5D Mark III versus E-M1 III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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.
 
Canon 5D Mark III Full Frame 22.1 5760 38401080/30p24.011.7229381
2.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
3.
 
Canon 5D Mark IV Full Frame 30.1 6720 44804K/30p24.813.6299591
4.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
5.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
6.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082
7.
 
Canon 5D Mark II Full Frame 21.0 5616 37441080/30p23.711.9181579
8.
 
Canon 5D Full Frame 12.7 4368 2912none22.911.1136871
9.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
10.
 
Nikon D600 Full Frame 24.2 6016 40161080/30p25.114.2298094
11.
 
Nikon D800 Full Frame 36.2 7360 49121080/30p25.314.4285395
12.
 
Nikon D800E Full Frame 36.2 7360 49121080/30p25.614.3297996
13.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p........
14.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
15.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
16.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p........
17.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........

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 E-M1 III provides a better video resolution than the 5D Mark III. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 III 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-M1 III 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 Canon 5D Mark III and Olympus E-M1 III in connection with corresponding information for a sample of similar 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.
 
Canon 5D Mark IIIoptical Y 3.2 1040 fixed n 1/8000s 6.0 n n
2.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
3.
 
Canon 5D Mark IVoptical Y 3.2 1620 fixed Y 1/8000s 7.0 n n
4.
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
5.
 
Canon 5DS Roptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
6.
 
Canon 6Doptical Y 3.0 1040 fixed n 1/4000s 4.5 n n
7.
 
Canon 5D Mark IIoptical Y 3.0 920 fixed n 1/8000s 3.9 n n
8.
 
Canon 5Doptical Y 2.5 230 fixed n 1/8000s 3.0 n n
9.
 
Nikon D610optical Y 3.2 921 fixed n 1/4000s 6.0 Y n
10.
 
Nikon D600optical Y 3.0 921 fixed n 1/4000s 5.5 Y n
11.
 
Nikon D800optical Y 3.2 921 fixed n 1/8000s 4.0 Y n
12.
 
Nikon D800Eoptical Y 3.2 921 fixed n 1/8000s 4.0 Y n
13.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
14.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
15.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
16.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
17.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y

One feature that is present on the 5D 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 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-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 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 5D Mark III writes its imaging data to Compact Flash or SDXC 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. The E-M1 III supports UHS-II cards on its first slot and UHS-I on its second one, 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 Canon EOS 5D 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.

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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.
 
Canon 5D Mark IIIYmonomonoYYmini2.0---
2.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
3.
 
Canon 5D Mark IVYmonomonoYYmini3.0YY-
4.
 
Canon 5DSYmonomonoY-mini3.0---
5.
 
Canon 5DS RYmonomonoY-mini3.0---
6.
 
Canon 6DYmonomonoY-mini2.0Y--
7.
 
Canon 5D Mark IIYmonomonoY-mini2.0---
8.
 
Canon 5DY-----2.0---
9.
 
Nikon D610YmonomonoYYmini2.0---
10.
 
Nikon D600YmonomonoYYmini2.0---
11.
 
Nikon D800YmonomonoYYmini3.0---
12.
 
Nikon D800EYmonomonoYYmini3.0---
13.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
14.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
15.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
16.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
17.
 
Panasonic G9YstereomonoYYfull3.0Y-Y

It is notable that the E-M1 III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 5D Mark III does not provide wifi capability.

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

The E-M1 III is a recent model that features in the current product line-up of Olympus. In contrast, the 5D Mark III has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 5D Mark III was succeeded by the Canon 5D Mark IV. 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.

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Review summary

So how do things add up? Is there a clear favorite between the Canon 5D Mark III and the Olympus E-M1 III? Which camera is better? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS 5D Mark III:

  • More detail: Offers more megapixels (22.1 vs 20.2MP) with a 7% higher linear resolution.
  • 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 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.
  • Longer lasting: Can take more shots (950 versus 420) on a single battery charge.
  • More heavily discounted: Has been available for much longer (launched in March 2012).

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Advantages 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.
  • 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: Has a touchscreen to facilitate handling and shooting adjustments.
  • 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 compact: Is smaller (134x91mm vs 152x116mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 370g or 39 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.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 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 and UHS-I) SDXC cards.
  • More affordable: Was introduced into a lower priced category (49 percent cheaper at launch).
  • More modern: Reflects 7 years and 11 months of technical progress since the 5D Mark III launch.

If the number of relative strengths (bullet points above) is taken as a guide, the E-M1 III is the clear winner of the contest (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 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.

5D Mark III 07:23 E-M1 III

How about other alternatives? Do the specifications of the Canon 5D 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 5D Mark III or the E-M1 III. 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 hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 5D Mark III..+ +82/1004.5/54.5/5 Mar 2012 3,499i
2.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
3.
 
Canon 5D Mark IV4.5/5+ +87/1004.5/54.5/5 Aug 2016 3,499 i
4.
 
Canon 5DS..+83/1004.5/54.5/5 Feb 2015 3,699 i
5.
 
Canon 5DS R5/5+83/1005/54.5/5 Feb 2015 3,699 i
6.
 
Canon 6D5/5+ +83/1004.5/54.5/5 Sep 2012 2,099i
7.
 
Canon 5D Mark II4/591/10079/1004/5.. Sep 2008 3,499i
8.
 
Canon 5D..88/100+ +o.. Aug 2005 3,299i
9.
 
Nikon D6104/5+ +87/1004.5/54.5/5 Oct 2013 1,999 i
10.
 
Nikon D6004/5+ +87/1005/54.5/5 Sep 2012 2,099i
11.
 
Nikon D8005/5+ +82/1005/55/5 Feb 2012 2,999i
12.
 
Nikon D800E....84/1005/55/5 Feb 2012 3,299i
13.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
14.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
15.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
16.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
17.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Canon 5D Mark III:
Check Ebay offers
Olympus E-M1 III:
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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 5D 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 5D 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 March 2012 February 2020
    Launch Price USD 3,499 USD 1,799
    Sensor Specs Canon 5D 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 22.1 Megapixels 20.2 Megapixels
    Image Resolution 5760 x 3840 pixels 5184 x 3888 pixels
    Pixel Pitch 6.25 μm 3.34 μm
    Pixel Density 2.56 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 200 - 25,600 ISO
    ISO Boost 50 - 102,400 ISO 64 - 25,600 ISO
    Image Processor DIGIC 5+ TruePic IX
    DXO Sensor Quality (score) 81 ..
    DXO Color Depth (bits) 24.0 ..
    DXO Dynamic Range (EV) 11.7 ..
    DXO Low Light (ISO) 2293 ..
    Screen Specs Canon 5D Mark III Olympus E-M1 III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.71x 0.83x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 5D 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) 1/8000s 1/8000s
    Continuous Shooting 6 shutter flaps/s 18 shutter flaps/s
    Shutter Life Expectancy150 000 actuations400 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or SDXC cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support no Single UHS-II
    Connectivity Specs Canon 5D Mark III Olympus E-M1 III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 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 no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Canon 5D Mark III Olympus E-M1 III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E6 BLH-1
    Battery Life (CIPA)950 shots per charge420 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 152 x 116 x 76 mm
    (6.0 x 4.6 x 3.0 in)
    134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    Camera Weight 950 g (33.5 oz) 580 g (20.5 oz)

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    You are here Home  »  CAM-parator  »  Canon 5D Mark III vs Olympus E-M1 III

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