Olympus OM-D E-M1 Mark III

Olympus OM-D E-M1 Mark III was announced in 2020 and is a Micro Four Thirds (17.4 x 13 mm) Mirrorless camera with 20.4 Megapixel CMOS sensor. Its native ISO ranges from 200 to 25,600 and expands to 64 - 25,600 in boosted mode. The camera has a Fully Articulated 3.0" screen with 1,037k dot resolution and built-in Electronic viewfinder with 2,360k dot resolution. It has a built-in 5-Axis Sensor Shift in body image stabilization.

Olympus OM-D E-M1 Mark III can capture video up to 4096 x 2160 resolution.

Here is the Olympus OM-D series lineup, where you can view and compare the main specifications of the cameras within the same series.

Olympus OM-D series lineup

	Model	Date	Sensor	Native ISO	Screen	Price
	Olympus OM-D E-M10 IV Compare	August 2020	20.3 MP Micro Four Thirds	200 - 25,600	Tilting 3.0" 1,040k dot Touchscreen	amazon B&H
	Olympus OM-D E-M1 III	February 2020	20.4 MP Micro Four Thirds	200 - 25,600	Articulated 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M5 III Compare	October 2019	20.4 MP Micro Four Thirds	200 - 25,600	Articulated 3.0" 1,040k dot Touchscreen	amazon B&H
	Olympus OM-D E-M1X Compare	January 2019	20.4 MP Micro Four Thirds	200 - 25,600	Articulated 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M10 III Compare	August 2017	16.1 MP Micro Four Thirds	200 - 25,600	Tilting 3.0" 1,040k dot Touchscreen	amazon B&H
	Olympus OM-D E-M1 II Compare	September 2016	20.3 MP Micro Four Thirds	200 - 25,600	Articulated 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M10 II Compare	August 2015	16.1 MP Micro Four Thirds	200 - 25,600	Tilting 3.0" 1,040k dot Touchscreen	amazon B&H
	Olympus OM-D E-M5 II Compare	February 2015	16.1 MP Micro Four Thirds	200 - 25,600	Articulated 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M10 Compare	March 2014	16.1 MP Micro Four Thirds	200 - 25,600	Tilting 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M1 Compare	October 2013	16.3 MP Micro Four Thirds	100 - 25,600	Tilting 3.0" 1,037k dot Touchscreen	amazon B&H
	Olympus OM-D E-M5 Compare	April 2012	16.1 MP Micro Four Thirds	200 - 25,600	Tilting 3.0" 610k dot Touchscreen	amazon B&H

You can view their side-by-side comparison here: Olympus OM-D E-M10 Mark IV vs OM-D E-M1 Mark III vs OM-D E-M5 Mark III vs OM-D E-M1X vs OM-D E-M10 Mark III vs OM-D E-M1 Mark II.

In this section we present pros and cons of Olympus OM-D E-M1 Mark III.

Here we are comparing Olympus OM-D E-M1 Mark III to its predecessor OM-D E-M1 Mark II and displaying the major changes.

For more detailed comparison between the models please visit Olympus OM-D E-M1 Mark III vs OM-D E-M1 Mark II.

In 2022 Olympus OM-D E-M1 Mark III was replaced by OM System OM-1. Let us now have a look at some important differences between Olympus OM-D E-M1 Mark III and its successor.

For more detailed comparison between the models please visit Olympus OM-D E-M1 Mark III vs OM-1.

Fully Articulated Touchscreen

Olympus OM-D E-M1 Mark III has a 3.0" Fully Articulated touchscreen with 1,037k dot resolution. Fully articulated screen makes this camera selfie and vlogger friendly and generally very useful for video shooting.

Electronic Viewfinder

Camera has a built-in Electronic viewfinder with 2,360k dot resolution. It has a 100% coverage and 1.48x (0.74x 35mm equivalent) magnification.

Olympus OM-D E-M1 Mark III features a 20.4 megapixel Micro Four Thirds CMOS sensor with dimensions of 17.4 x 13 mm and a total area of 226.2 mm². Its native ISO range is 200 - 25,600 and expands to 64 - 25,600 in boosted mode.

Here is a sensor size comparison chart where you can see how Olympus OM-D E-M1 Mark III's Micro Four Thirds sensor compares with other types of sensors:

Sensor size chart

	Sensor	Dimensions	Area	Aspect Ratio	Crop Factor
	Medium Format	44 x 33 mm	1452 mm2	4:3	0.79x
	Full Frame	36 x 24 mm	864 mm2	3:2	1x
	APS-H	27 x 18 mm	486 mm2	3:2	1.3x
	APS-C	23.6 x 15.6 mm	368.2 mm2	3:2	1.5x
	APS-C (Canon)	22.3 x 14.9 mm	332.3 mm2	3:2	1.6x
	Micro Four Thirds	17.4 x 13 mm	226.2 mm2	4:3	2x
	1-inch	13.2 x 8.8 mm	116.2 mm2	3:2	2.7x
	1/1.7-inch	7.44 x 5.58 mm	41.5 mm2	4:3	4.7x
	1/2.3-inch	6.17 x 4.55 mm	28.1 mm2	4:3	5.6x

Camera is equipped with TruePic IX processor and can take pictures up to 5184 x 3888 resolution.

Lens Mount

Olympus OM-D E-M1 Mark III has Micro Four Thirds lens mount. Due to Micro Four Thirds sensor its crop factor (also called lens multiplier) is 2x. This means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 2.

No Low-Pass Filter

There is no optical low-pass filter (OLPF), also known as an anti-aliasing filter, in front of the sensor. This results in a slightly sharper image but may also introduce moiré patterns and aliasing artifacts when photographing subjects with fine, repetitive patterns or details.

In-Body Image Stabilization

The camera has a built-in 5-Axis Sensor Shift in-body image stabilization (IBIS) with 7 stops of compensation. This means that you are still getting vibration reduction when camera is paired with non-image stabilizied lenses. It also works with lenses with optical image stabilization and in combination can achieve even better compensation.

Built-in Wi-Fi

Camera has a built-in Wi-Fi (Wi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz) which allows to easily transfer photos and videos from the camera to other Wi-Fi-enabled devices, such as smartphones, tablets, printers, or computers. This eliminates the need for cables and allows for quick and convenient media sharing and social media integration. It gives you the ability to control your camera remotely using a smartphone or tablet. This is particularly useful for taking self-portraits, group shots, or capturing images in challenging conditions without having to touch the camera. Firmware updates can also be downloaded and installed wirelessly.
  Check out the cameras in our database that have built-in WiFi.

Bluetooth

Camera has a built-in Bluetooth which lets you to connect the camera to a smartphone or a dedicated remote control device. This allows you to remotely trigger the camera, adjust settings and controls remotely through a paired mobile app. While Wi-Fi is generally faster for transferring larger files, Bluetooth can be used for small, selective transfers, it can provide real-time information about your camera's battery status, memory card capacity, and other key settings directly on your paired smartphone or smartwatch.
  Check out the cameras in our database that have built-in Bluetooth.

USB Input and HDMI Output

Olympus OM-D E-M1 Mark III has a USB 3.2 Gen 1x1 (5 GBit/sec) Type-C input for data transfer and battery charging. There is a Micro HDMI connector for video signal output.

Battery

Olympus OM-D E-M1 Mark III comes with BLH-1 battery pack with battery life of 420 shots.

External Storage Slots

The camera has two card slots - one for SD/SDHC/SDXC (UHS-II) and one for SD/SDHC/SDXC (UHS-I).

Shutter

Olympus OM-D E-M1 Mark III has Electronic shutter and Mechanical Focal Plane shutter. Shutter speed can go up to 1/32000 sec with electronic shutter and up to 1/8000 sec with mechanical shutter. Camera can shoot continuously up to 60.0 fps with electronic shutter and up to 15.0 fps with mechanical shutter.

Focusing

Olympus OM-D E-M1 Mark III has 121 (121 cross-type) focusing points and from -3.5 to +20 EV detection range. Touch-to-Focus allows users to select a specific point on the screen where they want the camera to focus. This feature can be helpful for achieving precise focus in both photo and video recording. There is also face detection feature which automatically finds and focuses on faces.

Exposure

Camera's exposure metering ranges from -2 to +20 EV and you can set the exposure compensation within the ±5 EV range. You can also do exposure bracketing and manual exposure adjustment.

Flash

Olympus OM-D E-M1 Mark III has no built-in flash but an external flash may be connected via Hot Shoe or PC Terminal. The fastest flash synchronization speed is 1/250 sec. Flash compensation can be set from -3 to +3 EV with 1/3 or 1/2 or 1 EV step increments.

Olympus OM-D E-M1 Mark III has dimensions of 134 x 91 x 69 mm (5.28 x 3.58 x 2.72"). It weighs 580 g (1.28 lb / 20.46 oz) which is neither heavy nor lightweight.

134 mm (5.28")

91 mm (3.58")

91 mm (3.58")

69 mm (2.72")