OM System OM-1
Real Sensor Data
- Brand
- OM System
- Sensor Format
- Micro Four Thirds
- Resolution
- 20.4 MP
- Pixel Pitch
- 3.32 microns
- Circle of Confusion
- 0.0144 mm
- Crop Factor
- 2.00x
- Announced
- 2022
Released in 2022, the OM-1 was the first camera to carry the OM System name after Olympus sold its camera division to a new company, and its stacked Micro Four Thirds sensor — a genuine first for the format — delivered a meaningful jump in autofocus tracking and readout speed over the Olympus-branded bodies that preceded it.
OM System OM-1 sensor specs
- Sensor
- Micro Four Thirds
- Resolution
- 20.4 MP
- Pixel dimensions
- 5,215 × 3,912 px
- Aspect ratio
- 4:3
- Pixel pitch
- 3.32 µm
- Crop factor
- 2.00x
- Circle of confusion
- 0.0144 mm
Micro Four Thirds sensor · DoF & Hyperfocal Calculator · Astro 500/NPF Calculator
Being the first Micro Four Thirds body with a stacked sensor was a genuine turning point for the format's reputation among action photographers — before the OM-1, fast-moving-subject distortion on an electronic shutter was a real, well-known weakness of the smaller sensor's earlier-generation chips, and OM System's stacked design closed that gap in one release rather than incrementally.
Launch-day IP53 weather sealing, verified through OM System's own environmental testing program rather than asserted on a spec sheet alone, was part of the same pitch — a body durable enough for the outdoor wildlife and adventure photography this camera was built around from day one, not a feature added in a later revision.
See these numbers used live in the DoF & Hyperfocal Calculator by selecting the Micro Four Thirds sensor format.
Frequently Asked Questions
Why did the brand change from Olympus to OM System?
Olympus sold its camera and imaging division to a separate company in 2021, which continued the product line under the new OM System name — the OM-1 was the first camera released fully under that new branding, though it directly continues the technical lineage of Olympus's OM-D camera line.