Olympus OM-D E-M1 Mark II vs Olympus OM-D E-M10 Mark IV

In this comparison, we will evaluate the Olympus OM-D E-M1 Mark II and the Olympus OM-D E-M10 Mark IV, highlighting the advantages of each over the other, discussing their pros and cons, shared strengths and weaknesses, and providing a rating based on their available features and specifications to assist you in choosing the one that best suits your needs.

Olympus OM-D E-M1 Mark II was introduced in September 2016 and Olympus OM-D E-M10 Mark IV was introduced in August 2020. Let us first list highlights of the models.

Now that we've looked at the most essential specifications and gained a basic understanding of these cameras, we can delve into more details and see the differences between them.

This section shows those features and specifications which are the reason to choose Olympus OM-D E-M1 Mark II over Olympus OM-D E-M10 Mark IV.

This section shows those features and specifications which are the reason to choose Olympus OM-D E-M10 Mark IV over Olympus OM-D E-M1 Mark II.

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

Screen

Olympus OM-D E-M1 Mark II and Olympus OM-D E-M10 Mark IV have 3.0" screens with 1,037k dot and 1,040k dot resolutions respectively. Olympus OM-D E-M1 Mark II has a Fully Articulated screen which makes it selfie and vlogger friendly and generally very useful for video shooting. Olympus OM-D E-M10 Mark IV has a Tilting screen which makes it very useful for photography purposes but not so useful for video shooting. Both models feature touchscreen which has advantages such as easy menu navigation, intuitive controls, quick setting adjustment and most importantly a Touch-to-Focus functionality allowing 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.

Viewfinder

Cameras have built-in Electronic (OLED) viewfinders with 2,360k dot resolution. They both have 100% coverage.

Both models feature a 20.3 megapixel Micro Four Thirds CMOS sensor with dimensions of 17.4 x 13 mm and a total area of 226.2 mm². Their native ISO range is 200 - 25,600

Here is a sensor size comparison chart where you can see how different sensors compare with each other:

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

Cameras are equipped with TruePic VIII processor and can take pictures up to 5184 x 3888 resolution.

Lens Mount

Cameras have Micro Four Thirds lens mount. Due to their Micro Four Thirds sensor their crop factor (also called lens multiplier) is equal to 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 on Olympus OM-D E-M1 Mark II

There is no optical low-pass filter (OLPF), also known as an anti-aliasing filter, in front of the sensor on Olympus OM-D E-M1 Mark II. 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 cameras have a built-in 5-Axis Sensor Shift in-body image stabilization (IBIS) (5.5 stops of compensation in Olympus OM-D E-M1 Mark II and 4.5 stops of compensation in Olympus OM-D E-M10 Mark IV). This means that you are still getting vibration reduction when cameras are 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

Cameras have built-in Wi-Fi (802.11b/g/n, 2.4 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 on Olympus OM-D E-M10 Mark IV

Olympus OM-D E-M10 Mark IV 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 Inputs and HDMI Outputs

Both models have USB inputs for data transfer and battery charging. Olympus OM-D E-M1 Mark II has a Micro HDMI and Olympus OM-D E-M10 Mark IV has a Micro HDMI connector for video signal output.

Battery

Olympus OM-D E-M1 Mark II comes with BLH-1 battery pack with battery life of 350 shots and Olympus OM-D E-M10 Mark IV comes with BLS-50 battery pack with battery life of 360 shots.

External Storage Slots

Olympus OM-D E-M1 Mark II has two card slots - one for Single Slot: SD/SDHC/SDXC (UHS-II) and one for SD/SDHC/SDXC (UHS-I). Olympus OM-D E-M10 Mark IV has a single SD/SDHC/SDXC (UHS-II) card slot.

Shutter

Olympus OM-D E-M1 Mark II has Mechanical Focal Plane shutter and Electronic shutter. Olympus OM-D E-M10 Mark IV 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 on Olympus OM-D E-M1 Mark II, and up to 1/16000 sec with electronic shutter and up to 1/4000 sec with mechanical shutter on Olympus OM-D E-M10 Mark IV. Olympus OM-D E-M1 Mark II can shoot continuously up to 60.0 fps with electronic shutter and up to 15.0 fps with mechanical shutter. Olympus OM-D E-M10 Mark IV can shoot continuously up to 15.0 fps with electronic shutter and up to 8.7 fps with mechanical shutter.

Exposure

Both cameras' exposure metering ranges from -2 to +20 EV and you can set the exposure compensation within the ±5 EV range on Olympus OM-D E-M1 Mark II and ±5 EV range on Olympus OM-D E-M10 Mark IV. You can also do exposure lock, exposure bracketing and manual exposure adjustment on Olympus OM-D E-M1 Mark II and exposure bracketing and manual exposure adjustment on Olympus OM-D E-M10 Mark IV.

Flash

Olympus OM-D E-M10 Mark IV has a built-in flash with maximum range of 7.20 m at ISO 200 and also accepts external flash which can be connected via Hot Shoe. Olympus OM-D E-M1 Mark II has no built-in flash but an external flash may be connected via Hot Shoe. The fastest flash synchronization speed is 1/250 sec on both cameras.

Olympus OM-D E-M1 Mark II body has dimensions of 134 x 91 x 67 mm (5.28 x 3.58 x 2.64") and Olympus OM-D E-M10 Mark IV body has dimensions of 122 x 84 x 49 mm (4.8 x 3.31 x 1.93"). Olympus OM-D E-M1 Mark II weighs 574 g (1.27 lb / 20.25 oz) and Olympus OM-D E-M10 Mark IV weighs 383 g (0.84 lb / 13.51 oz).

Olympus OM-D E-M1 Mark II

Olympus OM-D E-M10 Mark IV

134 mm

91 mm

122 mm

84 mm

91 mm

84 mm

67 mm

49 mm