Learn about the OM System OM-1 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 (2022) is the flagship Micro Four Thirds mirrorless camera, succeeding the Olympus E-M1 Mark III. It features a 20.4 MP stacked BSI CMOS sensor with on-chip phase-detection AF, 120 fps blackout-free shooting, computational photography modes (Live ND, handheld high-res), and IP53 weather sealing. The mechanical shutter is rated at an impressive 400,000 actuations — matching many full-frame professional bodies.
| Model | Release | Sensor | Rated Shutter Life | RAW Format |
|---|---|---|---|---|
| OM System OM-1 | 2022 | 20.4 MP M4/3 stacked | 400,000 | ORF |
| OM System OM-1 Mark II (update) | 2024 | 20.4 MP M4/3 stacked | 400,000 | ORF |
| OM System OM-5 (mid-range) | 2022 | 20.4 MP M4/3 | ~200,000 | ORF |
| Nikon Z8 (FF pro) | 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 most reliable method is the camera's built-in menu: Menu → Wrench → Camera Info → Shutter Count. You can also try dropping an ORF file into shuttercount.app, though in-file support is not yet confirmed for OM System bodies.
The OM-1 is rated at 400,000 actuations — exceptionally high for a Micro Four Thirds body and on par with full-frame flagships like the Nikon Z8.
No. The OM-1's electronic shutter mode (up to 120 fps) does not use the mechanical shutter and does not increment the actuation counter. Many wildlife and sports photographers use electronic shutter exclusively, resulting in very low mechanical shutter wear.
No. The OM System OM-1 (2022) is a modern Micro Four Thirds digital mirrorless camera. The original Olympus OM-1 was a 35mm film SLR from 1972. OM System is the brand that succeeded Olympus in the camera business.