OM SYSTEM OM-3 ASTRO Digital Camera Body

What’s new?

The OM SYSTEM OM-3 ASTRO is a dedicated astrophotography model derived from the OM-3, distinguished by a newly tuned infrared cut filter positioned in front of the sensor. This filter enables the camera to achieve approximately 100% transmission of Hα wavelengths, allowing red emission nebulae to be recorded with greater intensity and clarity than is possible with standard digital camera filtration. This architectural change directly affects colour capture at the sensor level, improving nebula reproduction without external modification.

Beyond the optical adjustment, the OM-3 ASTRO integrates astrophotography-specific presets and controls across the system. Preconfigured custom shooting modes, dedicated colour profiles, High Res Shot stacking, and night-focused viewing and AF tools reduce setup time and improve repeatability during extended night sessions. Together, these changes mark a functional shift from a general-purpose mirrorless camera to a purpose-built astrophotography platform.

Sensor and processing

The OM-3 ASTRO combines a 20 MP stacked back-illuminated Live MOS sensor with the TruePic X image processor. The stacked sensor supports faster readout and stable multi-frame capture, while the BSI structure improves light gathering during high-sensitivity shooting. TruePic X processes complex computational tasks such as stacking and noise reduction, resulting in cleaner star fields, galaxies, and nightscapes, and more consistent colour reproduction during long exposures.

IR-cut filter and Hα optimisation

The custom IR-cut filter mounted in front of the OM-3 ATSRO’s image sensor is optically tuned for astrophotography. Its transmission characteristics are adjusted to pass Hα wavelengths, which are usually suppressed in general photography cameras, altering how red light is recorded at capture. The filter enables nebulae emitting Hα light to be rendered with clarity and more accurate colour directly in-camera, reducing the need for post-processing corrections or camera modifications.

High-resolution stacking for astrophotography

High Res Shot is a computational feature that composites multiple frames into a single high-resolution image. When used with a camera mounted on a tripod or an equatorial mount, the OM-3 ASTRO can generate a composite image with approximately 50 million pixels from 12 frames. The stacking process aligns individual frames to correct for star movement, compensating for diurnal motion and minor tracking errors while reducing noise compared to a single long exposure.

Autofocus and night photography tools

Starry Sky AF on the OM-3 Astro is designed to detect and focus on point light sources, enabling reliable autofocus on stars with minimal contrast. Night Vision Mode increases display brightness without affecting exposure, supporting accurate composition in dark environments. Live Composite allows star trails to be built incrementally with a live preview, providing direct control over trail length and exposure balance during capture.

Stabilisation and body design

High 5-axis Sync-IS stabilises the sensor to reduce the impact of small movements during long exposures and multi-frame capture. This stabilisation improves framing stability and alignment accuracy when using High Res Shot or composing starry landscapes without a tripod. For long-exposure deep-sky imaging when using a tripod or equatorial mount, you can turn off stabilisation. The vintage-styled premium metal body provides structural rigidity, while IP53-rated dustproof, splashproof, and freezeproof sealing supports outdoor night shooting in cold or damp conditions. This combination improves stability and reliability during extended astrophotography sessions.

Viewing, controls, and connectivity

A 2.36m-dot OLED electronic viewfinder provides a clear, detailed view for precise framing at night. The Creative Dial offers direct access to colour profile control, monochrome profile control, colour creator, and art filters, enabling tailored colour behaviour for different night sky subjects. S&Q mode supports slow and quick motion video, while RAW video data output allows external recording. Built-in Wi-Fi and Bluetooth enable remote operation, image transfer, and extended control during long-duration shooting.

What’s in the box?

• 1 x OM SYSTEM OM-3 ASTRO Digital Camera Body
• 1 x Battery
• 1 x Body Cap
• 1 x USB Cable
• 1 x Shoulder Strap
• 1 x Instruction Manual
• 1 x Warranty Card