CameraReview

OM System OM-1 Mark II

OM System · Mirrorless · 20.4 MP · Micro Four Thirds · 4K video

OM System OM-1 Mark II

Score Breakdown

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UNSCORED
Buying Options
What We Like
+Class-leading 8.5-stop in-body image stabilization with updated algorithms
+Advanced AI subject detection and tracking for wildlife, birds, and humans
+Ultra-fast stacked sensor enables 120fps RAW bursts with 213-frame buffer
+Compact and lightweight Micro Four Thirds system with industry-leading weather sealing (IP53)
+Advanced computational photography tools including Live GND, Live ND, and 50MP handheld high-res mode
+High-resolution 5.76M-dot OLED viewfinder with 120Hz refresh rate for smooth subject tracking
Worth Knowing
−20.4MP sensor resolution may be limiting for photographers requiring very large prints
−Complex menu system requires significant learning time to access full feature set
−Smaller sensor than full-frame alternatives results in shallower depth-of-field control
−Autofocus occasionally misses fast-moving subjects despite advanced tracking capabilities

General

About This Camera
The OM System OM-1 Mark II is a high-speed Micro Four Thirds camera based around a 20MP Stacked CMOS sensor. As the name implies, it's an updated version of the flagship OM-1, with a series of hardware and firmware improvements. The OM-1 Mark II boasts an impressive 8.5 EV stops of stabilisation, taking it 1.5 stops further than the already impressive OM-1. It also features Sync-IS up to 8.5 stops. The OM SYSTEM OM-1 Mark II is purpose-built for bird photography, featuring intelligent AI Detection AF that locks onto birds in flight — even when they're flying directly towards the camera. Its ultra-fast stacked sensor readout enables 50fps AF/AE bursts, 120fps fixed AF, and a blackout-free EVF, allowing you to track subjects smoothly without losing sight.
BrandOM System
Announcement date
ⓘ
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
Jan 2024
Released
ⓘ
Refers to the year this camera was officially made available for sale.
2024
Camera typeMirrorless

Sensor

Type4/3" Stacked BSI Live MOS
Effective Pixels20.4 Megapixels
Aspect Ratio4:3
Sensor Area17.3 x 13.0 mm

Image processing

EngineTruePic X

Viewfinder

TypeEye-level OLED Electronic Viewfinder
Resolutionapprox. 5.76M dots
Magnificationapprox. 1.48x - 1.65x
Coverageapprox. 100% Field of View
Diopter Adjustment-4.0 to +2.0 diopters

Monitor

Type3.0 inch Vari-angle Touch LCD
Resolutionapprox. 1.62M dots

Autofocus

AF System1053-point phase-detection cross-quad pixel AF
Subject DetectionAircraft, Birds, Bullet trains, Cats, Dogs, Formula cars, Helicopters, Humans, Motorcycles, Rally cars, Standard trains, Steam Locomotives

Continuous shooting

Standardapprox. 10 fps (selectable 1-10fps)
Burst Speedapprox. 25-120 fps
Fixed AFapprox. 120 fps

Image stabilization

TypeSynchronized 5-axis in-body
Compensation8.5-stop compensation
Sync ISup to 8.5 stops

ISO

ISO RangeLOW (approx.80) - 102400
Auto ISOCustomizable, LOW (approx.80) - 102400 (Default: 200-25600)

Video

ResolutionDCI/UHD 4K 60p
Bit Depth10-bit 4:2:2 internal
Frame Rates4K/C4K up to 60p; Full HD high-speed up to 240 fps
Max video resolution
ⓘ
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
4K

Computational photography

FeaturesHandheld High Res Shot (50MP handheld / 80MP tripod), Live GND, Live ND, Focus Stacking, HDR, Multi Exposure, Handheld Live Composite

Build

Body MaterialMagnesium alloy
Weather SealingIP53 certified (splash-proof, dust-proof, freeze-proof to -10°C)

Battery

TypeBLX-1 Lithium-Ion rechargeable
Battery Lifeapprox. 500 photos per charge

Optics

Sensor format
ⓘ
Refers to the most commonly used sensor sizes.
Micro Four Thirds
Viewfinder type
ⓘ
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Electronic
Lens mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Micro Four Thirds
Megapixels
ⓘ
The higher the number of megapixels, the more detail the cameras sensor can capture.
20.4 MP050
Continuous shooting
ⓘ
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
Up to 120 (electronic) / 10 (mechanical)
Autofocus points
ⓘ
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
10530300
Max ISO
ⓘ
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
256003003280000
In-body stabilisation
ⓘ
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Yes

Features

Weather sealing
ⓘ
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Yes