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OM System OM-3
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OM System · Mirrorless · 20.4 MP · Micro Four Thirds

OM System OM-3

From $1,699.99 — 1 offer
KEY FACTS
BrandOM System
Announcement dateFeb 2025
Released2025
Camera weight413 g
Camera typeMirrorless
What We Like
+Flagship sensor and autofocus from OM-1 Mark II in a more compact, retro-styled body
+Exceptional computational photography features (High Res Shot, Focus Stacking, Live ND, Live GND) accessible via dedicated CP button
+All-metal construction with IP53 weather sealing in ultra-portable form factor weighing only 413g
+Advanced AI autofocus with 1,053 cross-type points and subject detection for wildlife, sports, and everyday shooting
+Creative Dial for quick access to film-like color and monochrome profiles, encouraging in-camera creativity
+Excellent image stabilization up to 7.5 EV stops and high burst shooting speeds (120fps)
Worth Knowing
−Single SD card slot limits redundancy and workflow compared to flagship OM-1 Mark II
−No front handgrip on flat face can feel uncomfortable for some users with larger lenses, though thumbrest provided
−Slightly smaller viewfinder (2.36M dots) and less effective IBIS than OM-1 Mark II at similar price point
−No joystick for AF area selection, relying instead on touch screen or directional buttons

General

Brand
OM System
Announcement date
ⓘ
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
Feb 2025
Released
ⓘ
Refers to the year this camera was officially made available for sale.
2025
Camera weight
413 g
Camera type
Mirrorless
Read our notes on general
The OM System OM-3 takes the key specs of the flagship OM-1 Mark II and presents them in a gorgeously designed, all-metal retro body inspired by the classic Olympus OM-1 film SLR. At its core is a 20.4MP Stacked BSI sensor and TruePic X processor delivering up to 120 fps shooting and 1053-point autofocus, with 7.5-stop image stabilization, 4K 60p video, IP53 weather sealing, and intuitive controls. The thoughtfully designed camera with all-metal weather-sealed body feels durable yet relatively lightweight, making it a great companion for outdoor adventures.

Sensor

Type
20.4MP Stacked BSI Live MOS

Processor

Engine
TruePic X

Autofocus

System
Hybrid AF with phase and contrast detection
AF Points
1,053 cross-type points
Subject Detection
AI Subject Detection (humans, birds, animals, motorsport, aeroplanes, trains)

Image stabilization

Type
5-axis in-body
Compensation
Up to 7.5 EV steps with Sync IS lenses, 6.5 EV with non-Sync IS lenses

Shooting

Continuous Shooting
120 fps (single AF), 50 fps (continuous AF)
Shutter Modes
Mechanical, electronic, silent

ISO

Range
80-102,400
Adjustable
1/3, 1/2, or 1 EV steps

Video

4K Recording
60p, 50p, 30p, 25p, 24p
C4K Recording
60p, 50p, 30p, 25p, 24p
Full HD
60p, 50p, 30p, 25p, 24p
High Speed FHD
240fps, 200fps, 120fps, 100fps
Codec
H.265 with 10-bit, OMLog400 color profile

Viewfinder

Type
Eye-level OLED electronic
Resolution
2.36 million dots
Magnification
Approx. 1.37x

Screen

Type
3.0-inch vari-angle touch monitor
Resolution
1,620K dots
Aspect Ratio
3:2

Build

Materials
Magnesium alloy and aluminum, all-metal construction
Weather Sealing
IP53 rated - dustproof, splashproof, freezeproof to -10°C
Dimensions
139.3mm (W) x 88.9mm (H) x 45.8mm (D)

Battery

Type
BLX-1 Li-ion
Life
Approx. 500 shots (mechanical shutter), up to 1,500 shots (electronic shutter)
Charging
In-camera USB-C charging

Computational features

High Res Shot
80MP tripod mode, 50MP handheld mode
Focus Stacking
Up to 15 images
Live ND
Up to ND32
Live GND
Graduated neutral density
Multiple Exposure
Available
Live Composite
Available

Creative controls

Creative Dial
5 positions with color and monochrome profiles
Video/Stills Dial
Switch between stills, video, slow motion, and quick motion modes
Computational Photography Button
Quick access to CP features

Optics

Megapixels
ⓘ
The higher the number of megapixels, the more detail the cameras sensor can capture.
20.4 MP050
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

Features

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

Storage and battery

Dual memory card slots
No