Learn about the OM System OM-1 Mark II shutter lifespan, what counts are acceptable for used cameras, and how to check the actuation count — via the camera menu or from an ORF file.
Check Shutter Count →The OM System OM-1 Mark II (2024) is the updated flagship of OM System's Micro Four Thirds lineup. It builds on the original OM-1 with substantially improved AI-based subject recognition autofocus, extended burst rates (up to 120 fps with AF/AE tracking), and enhanced video capabilities including 4K/120p. The 20.4 MP stacked BSI CMOS sensor and IP53 weather sealing are carried over from the original. The mechanical shutter retains the 400,000-actuation rating.
| Model | Release | Sensor | Rated Shutter Life | RAW Format |
|---|---|---|---|---|
| OM System OM-1 Mark II | 2024 | 20.4 MP M4/3 stacked BSI CMOS | 400,000 | ORF |
| OM System OM-1 (predecessor) | 2022 | 20.4 MP M4/3 stacked BSI CMOS | 400,000 | ORF |
| OM System OM-5 (mid-range) | 2022 | 20.4 MP M4/3 BSI CMOS | ~200,000 | ORF |
| Nikon Z8 (FF comparison) | 2023 | 45.7 MP full-frame stacked | 400,000 | NEF |
| Actuation Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 20,000 | 0 – 5 % | Very low use — near new |
| 20,000 – 80,000 | 5 – 20 % | Low use |
| 80,000 – 200,000 | 20 – 50 % | Moderate use — normal for active photographers |
| 200,000 – 350,000 | 50 – 88 % | High use — negotiate price |
| 350,000 + | 88 %+ | Near or past rated life |
The OM-1 Mark II is an iterative but meaningful upgrade over the original OM-1, primarily aimed at sports and wildlife photographers:
Autofocus: The AI subject recognition system is dramatically expanded. Where the OM-1 recognised birds, cars, and humans, the Mark II adds motorcycles, trains, aeroplanes, insects, and drones. Tracking reliability and speed are also improved.
Burst speed: The maximum electronic shutter burst rate increases to 120 fps with full AF/AE tracking (up from 50 fps on the OM-1).
Video: 4K/120p capture is now supported (up from 4K/60p), and OM-Log recording options are expanded.
Unchanged: The 20.4 MP stacked sensor, 400,000-actuation shutter rating, IP53 weather sealing, and ORF file format are identical to the original OM-1.
The OM-1 Mark II is rated at 400,000 actuations — identical to the original OM-1 and among the highest in the Micro Four Thirds system.
No. The OM-1 Mark II's electronic shutter mode (up to 120 fps with AF/AE) does not use the mechanical shutter and does not increment the actuation counter. Wildlife and sports photographers who use high-speed burst modes with electronic shutter will accumulate very low mechanical shutter counts.
Go to MENU → Wrench icon → Camera Info → Shutter Count. This is the most reliable method, as OM System ORF files do not store a confirmed shutter-count tag in the EXIF metadata.
Yes, especially for wildlife and sports photography. The 400,000-actuation rating means even a heavily used body has substantial life remaining. The improved AI AF of the Mark II over the original OM-1 makes it particularly attractive for tracking fast-moving subjects at high burst rates.