The OM System OM-1 Mark II is an OM System Micro Four Thirds camera released in 2024, built around an 20.4MP stacked BSI Live MOS sensor. Key features include 8.5-stop IBIS, phase-detection AF, subject recognition, 4K 60fps video, and weather sealing. It replaces the OM System OM-1. At 599g, this is 61g above the M43 average of 538g, noticeable but within the expected range for a body with this feature set. The Panasonic Lumix G97 is 80g lighter if that matters.
Best for: Wildlife and sports photography
Pros
- Class-leading 8.5-stop IBIS
- Phase-detect AF with subject recognition
- Weather sealed to IP53
Cons
- Premium price
Wildlife and bird photography
The OM-1 Mark II has phase-detect AF with bird and animal recognition, shoots at 120fps in pre-capture mode, and is sealed to IP53. The 2x crop factor gives 600mm equivalent reach from a 300mm lens. Pre-capture means frames are buffered before the shutter is pressed fully, so you capture the moment just before the decisive frame. Full guide →
Sports and action
The 120fps electronic burst, pre-capture buffering, and phase-detect subject tracking make it the fastest M43 body for action. The stacked BSI sensor gives a fast readout that reduces rolling shutter when shooting fast-moving subjects with the electronic shutter.
Macro photography
OM System bodies have the best in-camera focus stacking in the system. The OM-1 Mark II shoots a bracketed focus sequence and merges it in-camera without external software. The 120fps burst also helps with live subjects by increasing the chance of a sharp frame between movements. Full guide →
Cold and wet conditions
IP53 weather sealing and a magnesium alloy body handle rain, dust, and temperatures down to -10C. The body is built to the same standard as professional DSLRs. If you regularly shoot outdoors in unpredictable conditions, the sealing removes a layer of concern.
Specifications
| Body | |
| Brand | OM System |
| Status | current |
| Released | 2024-02 |
| Weight | 599g |
| Dimensions | 135 × 91.6 × 72.7mm |
| Body material | Magnesium alloy |
| Weather sealed | IP53 |
| Screen | Fully articulated |
| Screen size | 3" |
| Screen resolution | 1620k dots |
| Touchscreen | Yes |
| Sensor | |
| Description | 20.4MP stacked BSI Live MOS |
| Megapixels | 20.4MP |
| Resolution | 5184 × 3888 |
| ISO range (native) | 80–102400 |
| High-res mode | 80MP |
| Viewfinder | |
| EVF | Yes |
| EVF resolution | 5,760,000 dots |
| EVF magnification | 1.65x |
| Stabilisation | |
| IBIS | Yes |
| IBIS stops | 8.5 stops |
| Dual IS | No |
| Autofocus | |
| Phase detect | Yes |
| Subject recognition | Yes |
| Subject types | human, animal, bird, vehicle, train, airplane, motorsports |
| AF points | 1053 |
| Shooting | |
| Max mechanical shutter | 1/8000 |
| Max electronic shutter | 1/32000 |
| Burst (mechanical) | 10 fps |
| Burst (electronic) | 120 fps |
| Battery life (CIPA) | 520 shots |
| Video | |
| 4K | Yes |
| 4K 60fps | Yes |
| Log | No |
| Max video bitrate | 400 Mbps |
| Ports & storage | |
| Card slots | 2 |
| Card type | CFexpress Type B + SD UHS-II |
| HDMI | micro |
| USB | USB-C 3.2 |
| Headphone jack | Yes |
| Mic port | Yes |
| WiFi | Yes |
| Bluetooth | Yes |
| GPS | No |
| NFC | No |
| Battery | BLX-1 |
| Pricing | |
| Price (approx.) | $2,199 USD |
Firmware history
How to update →| Version | Date | Download |
|---|---|---|
| 1.3 | 2025-07 | Download ↗ |
| 1.2 | 2025-04 | Download ↗ |
| 1.1 | 2024-04 | Download ↗ |
Frequently asked questions
Does the OM System OM-1 Mark II have IBIS?
Yes. The OM System OM-1 Mark II has in-body image stabilisation rated at 8.5 stops.
Is the OM System OM-1 Mark II weather sealed?
Yes. The OM System OM-1 Mark II is weather sealed to IP53, which means it is protected against dust and splashing water.
Does the OM System OM-1 Mark II shoot 4K video?
Yes. The OM System OM-1 Mark II records 4K video at up to 60fps.
Does the OM System OM-1 Mark II have phase-detect autofocus?
Yes. The OM System OM-1 Mark II uses phase-detect autofocus, with subject recognition for human, animal, bird, vehicle, train, airplane, motorsports.
What card does the OM System OM-1 Mark II use?
The OM System OM-1 Mark II has 2 card slots and accepts CFexpress Type B + SD UHS-II cards.
How much does the OM System OM-1 Mark II weigh?
The OM System OM-1 Mark II weighs 599g (body only, with battery and card).
What did the OM System OM-1 Mark II replace?
The OM System OM-1 Mark II replaces the OM System OM-1. It improves on AF system, sensor performance, and video capabilities compared to its predecessor.