OM SYSTEM PEN
20.4MP Micro Four Thirds mirrorless camera

OM SYSTEM PEN is a compact, rangefinder-style mirrorless camera for everyday, street and travel photography. Its interchangeable-lens body pairs a 20.4MP Live MOS sensor with a built-in electronic viewfinder and a fully articulating touchscreen.
It offers five-axis in-body stabilization, 121-point phase-detection autofocus, customizable color and monochrome profiles, and 4K video. The dust- and splash-resistant body is designed for photographers who want a small camera they can carry regularly.
Specifications
| Main features | |
|---|---|
| Type | Rangefinder-style mirrorless |
| Announced | 2026-09-09 |
| Connectivity | USB 2.0 Type-C, micro HDMI, 3.5 mm microphone input, Wi-Fi, Bluetooth 5.2 |
| Storage types | 1x SD/SDHC/SDXC (UHS-I) |
| Lens mount | Micro Four Thirds |
| Focal length multiplier | 2× |
| Price | $999.99 (body only, US launch price) |
| Sensor | |
| Max resolution | 5184 x 3888 |
| Other resolutions | 1024 x 768 |
| Effective pixels, Mp | 20.4 |
| Sensor type | Live MOS |
| Sensor size | Four Thirds (17.4 x 13.0 mm) |
| Sensivity, ISO | ISO 200–25600; extended ISO 64, 100 |
| Processor | TruePic IX |
| Image stabilisation | 5-axis sensor-shift |
| Screen / viewfinder | |
| Screen size | 3.0″ |
| Screen resolution | 1,040,000 |
| Touch screen | Yes |
| Screen type | Fully articulating LCD |
| Live view | Yes |
| Viewfinder type | Electronic (OLED) |
| Viewfinder coverage | 100% |
| Viewfinder magnification | 0.55–0.62× (35mm equivalent, depending on display style) |
| Viewfinder resolution | 2,360,000 |
| Photography features | |
| Format | JPEG, RAW |
| Shutter speed | 60–1/4000 sec (mechanical); 60–1/32000 sec (electronic) |
| Continuous drive | Up to 30 fps (electronic shutter; focus and exposure locked) |
| Manual exposure mode | Yes |
| Built-in flash | No |
| Videography features | |
| Resolutions | 4096 x 2160 @ 24p; 3840 x 2160 @ 30p, 25p, 24p; 1920 x 1080 @ 60p, 50p, 30p, 25p, 24p |
| Format | MOV (H.264) |
| Focus | |
| Number of focus points | 121 |
| Autofocus | Yes |
| Full time manual | Yes |
| Focus method | Phase detection, contrast detection, single, continuous, tracking, touch, face and eye detection |
| Physical | |
| Battery life, shots | 410 |
| Environmentally sealed | Yes (IPX1 splash resistance with a compatible lens) |
| Weight (inc. batteries), g | 393 |
| Dimensions | 125.8 x 74.5 x 43.3 mm |
| Materials | Engineering-plastic body |
| Colour | Silver, black |
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