OM System OM-1 Mark II

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Basics

BrandOM System
Released (Japan) ?Feb 2024
MountMicro Four Thirds

Sensor

Sensor sizeFour Thirds
Effective megapixels20.4 MP
Sensor typeStacked
Spec sheet says "back-illuminated stacked Live MOS sensor"
ISO (min)ISO 200
The manual range is 200 to 102400. LOW (approx. ISO 80 and 100 equivalent) is not included
ISO (max)ISO 102400

Shutter

Mechanical shutter (fastest) ?1/8000 s
Electronic shutter (fastest)1/32000 s
Slowest shutter speed60 s
Flash sync speed1/250 s

Burst

Burst, mechanical shutter10 fps
Burst, electronic (AF tracking) ?50 fps
Features page says "50 fps with AF/AE tracking, 120 fps with AF/AE locked" (silent sequential SH2)
Burst, electronic (max) ?120 fps
Silent sequential SH1. Focus and exposure locked at the first frame
Pre-capture ?Yes
Pro Capture

AF & stabilization

Subject detectionPeople, Animals, Birds, Vehicles
Cars, motorcycles, airplanes, helicopters, trains and steam locomotives are grouped as "vehicles"
In-body stabilizationYes
IBIS, body only ?8.5 stops
Body only, with M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO II attached. Also 8.5 stops with Sync IS
IBIS, max (incl. lens) ?8.5 stops

Viewfinder & monitor

ViewfinderYes
Viewfinder resolution5.76M dots
Viewfinder magnification ?0.74x
Spec sheet gives approx. 1.48 to 1.65x (50mm lens). Halved for Four Thirds to get the 35mm-equivalent value
Monitor size3.0 in
Monitor resolution1.62M dots
Monitor articulationVari-angle
Spec sheet says "2-axis movable LCD". The OM-3 and others with the same wording are described as "swivel type", so this is treated as vari-angle
TouchscreenYes

Video

Max video resolution ?4K (4096)
4K max frame rate60p
4K max frame rate (no crop) ?Not stated
Crop not stated
Full HD max frame rate60p
Normal recording. High-speed recording goes to 240 fps
10-bit recordingNot stated
Supports OM-Log and HLG, but the internal bit depth is not stated (HDMI output is 10-bit YUV)
Internal RAW videoNo
RAW is external output over HDMI only
Recording time limit ?Not stated
Says "movies over 30 minutes can be recorded as a single file". The limit is said to depend only on the card and file size, with no time given

Body

Weight, body only511 g
Weight, with battery ?599 g
Dimensions (W×H×D)134.8 × 91.6 × 72.7 mm
Weather sealingYes
IP53 (when combined with a weather-resistant lens)

Storage, power & wireless

Card slots2
Card typesSD UHS-I, SD UHS-II
Battery life (CIPA) ?500 shots
Standard. Approx. 1010 shots in quick sleep mode
USB powerPower while shooting
WirelessWi-Fi, Bluetooth

Sources

Checked November 15, 2026. Sources are the maker's official Japanese website. Not stated means the value is not given there.

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