OM System OM-3
OM System · Mirrorless · 20.4 MP · Micro Four Thirds · 4K video
Score Breakdown
This product does not have an overall score yet.
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UNSCORED
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 | |
|---|---|
About This CameraThe 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. | |
| 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 |
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 |
Max video resolution ⓘThe best resolution this camera can capture video in. Modern cameras can capture up to 8K video. |  4K |
Max video frame rate ⓘHow many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect. | 60 fps |
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 |
In-body stabilisation ⓘIn-body Stabilization means the camera has a certain technology embedded that counteracts camera shake. |  Yes |
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 |
Continuous shooting ⓘThe number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode. | 120 fps045 |
Features | |
Weather sealing ⓘWeather sealing capabilities will give you more confidence when shooting in unfavourable conditions. |  Yes |
Storage & Battery | |
| Dual memory card slots | No |