• Optimized for Astrophotography
• IR-Cut Filter Passes H-Alpha Wavelength
• High Res Shot for In-Camera Stacking
• Custom Modes for Astro/Starry Landscape
• Starry Sky AF & Live Composite Mode
• 20MP Stacked BSI Live MOS MFT Sensor
• 3.0" 1.62m-Dot Swivel Touchscreen LCD
• 2.36m-Dot OLED Electronic Viewfinder
• 5-Axis In-Body Image Stabilization
• IP53 Weather-Sealed & Freezeproof Design

A purpose-built camera for astrophotography, the OM-3 ASTRO, from OM SYSTEM, is a specialized Micro Four Thirds mirrorless body featuring adjusted optical characteristics that enable recording red nebulae, constellations, and other nighttime phenomena.

Capture Hydrogen-Alpha Wavelengths

The key distinction of this specialized camera is an IR-cut filter that has been placed in front of the sensor, achieving 100% transmission of Hα (hydrogen-alpha) wavelengths. This, coupled with the TruePix X processor, allows the camera to record accurate detail, shape, and color of diffuse nebulae and other celestial objects.

Image Stacking and Hi Res Shot Mode

The High Res Shot mode is a computational function that combines information from multiple, sequentially recorded frames and composites it in-camera into a single high-resolution image. For the OM-3 ASTRO, the Handheld High Res Shot mode is the preferred mode, even when working from a tripod or equatorial mount, to capture and composite 12 separate frames into 50MP image with reduced image noise, no subject blur, and greater detail.

Since the position of each image is matched when compositing, this handheld mode will also correct the diurnal motion of stars from a tripod or other star misalignment or tracking errors caused by an equatorial mount.

Custom Modes and Other ASTRO Features

• Preprogrammed COLOR settings make it easy to get started photographing astro scenes and starry landscapes right away—the COLOR1 setting optimizes color and camera settings for astrophotography scenes, like when photographing nebulae, and the COLOR2 setting is optimized for starry landscape scenes.
• The C1, C2, and C3 custom modes have also been preset for different shooting situations—C1 is a frame stacking mode for astrophotography, C2 is a frame stacking mode for starry landscapes, and C3 is the handheld mode for starry landscapes.
• Other key features already featured in the standard OM-3 are greatly beneficial to the specialized needs of astrophotography, including Starry Sky AF, Live Composite, the digital level, support for power delivery via USB while shooting, and a Night View mode.

Astrophotography Accessory Filters

Beyond the modified camera, there are also a pair of optional specialized filters to enhance the quality and clarity of astro and starry sky photos. Both of these filter are body mount filters, too, and can be inserted within the lens mount to make them usable with any attached lens, including fisheyes and ultra-wides:

• The BMF-LPC01 Light Suppression Filter cuts stray light from artificial light sources, like street lamps, for more vividness and clarity when photographing near cities.
• The BMF-SE01 Soft Filter can slightly blur and soften the point light rendering of stars to make them appear more significant within the frame.

Based on the Original OM-3

The OM-3 delivers flagship-level performance, customizable creative tools, and robust video capabilities, making it a great camera for a range of astro and starry sky scenes. Adopting the 20MP Stacked BSI Live MOS MFT Sensor, TruePic X engine, and the 1053 AF points native to the OM-1 Mark II, this compact system proves to be a giant in capabilities.

Timeless Elegance and Innovative Design

The OM-3 prides itself on conserving the timeless elegance of the SLR camera. Its design repurposes the traditional dials to provide valuable access to customizable tools, such as a creative dial that allows easy transition between custom profiles, an intuitive button that unifies computational features such as Live ND and GND, focus stacking, and more.

With easy access to the computational photography button, the user is allowed to harness a wide array of creative tools, such as capturing light trails free from urban light pollution or combining various focus points to capture the wonders and details hidden in the world of macro photography.

5-Axis Image Stabilization

The OM SYSTEM 5-axis image stabilization provides up to 6.5 shutter speed stops of compensation for the center and 5.5 stops for the corner. When paired with compatible lenses, the camera supports Sync IS delivering even more powerful image stabilization at up to 7.5 shutter speed stops at the center and 6.5 stops at the corner, ensuring blur-free images in a variety of scenarios.

Video Features

Also optimized for video creators, the OM-3 allows for 4K video recording at up to 60p, seamless mode switching, heat management for extended recording, and new OM-Cinema video profiles. The dedicated video dial makes switching between still, video, and S&Q mode a breeze, easily recording slow or quick motion videos at frame rates ranging from 1 to 120 fps.

Additional Features

• IP53 splash and dust resistance ensures reliable performance in harsh conditions
• 1053-point Cross-Type On-chip Phase Detection Quad Pixel AF
• AI Detection AF for subjects including people, motorsports, birds, and pets
• Starry Sky AF for astrophotography
• High-speed sequential shooting at up to 120 fps with AF tracking at 50 fps
• Pro Capture Mode to capture up to 70 frames before fully pressing the shutter
• Custom Mode Labels for personalization of settings
• Custom setting options for activating video modes Supports integration with video recording lights

Lens Mount  Micro Four Thirds

Effective Sensor Resolution  20.4 Megapixel

Image Sensor  Four Thirds

Image Stabilization  Sensor-Shift

ISO/Gain Sensitivity  Native: 200 to 25,600

Internal Recording  H.264/H.264 Long GOP/MOV/MPEG-4 AVC 4:2:0 8-Bit 
                                Up to DCI 4K at 24.00/25/30.00/50/60.00 fps
                               H.265/H.265 Long GOP/MOV 4:2:0 10-Bit
                               Up to DCI 4K at 24.00/25/30.00/50/60.00 fps

Video Output  4:2:2/4:2:0 8/10-Bit via HDMI
                                        DCI 4K

Media/Memory Card Slot  Single Slot: SD/SDHC/SDXC (UHS-II)

Video I/O  1x Micro-HDMI Output

Audio I/O  1x 1/8" / 3.5 mm TRS Stereo Headphone Output
                 1x 1/8" / 3.5 mm TRS Stereo Microphone Input

Power I/O  1x USB-C Input

Other I/O  1x USB-C Data Output (Shared with Power Input)

Wireless  Wi-Fi 4 (802.11n) / Bluetooth 4.2

Display Type  Articulating 3" Touchscreen LCD

Battery  1x BLX-1 Rechargeable Lithium-Ion (Included)

Shutter Type  Mechanical Focal Plane Shutter and Electronic Rolling Shutter

Bulb/Time Mode  Bulb Mode

ISO/Gain Sensitivity  Native: 200 to 25,600

Metering Method  Center-Weighted Average, Multi-Zone, Spot

Exposure Modes  Aperture Priority, Manual, Program, Shutter Priority

Exposure Compensation  -5 to +5 EV (1/3, 1/2, 1 EV Steps)

Metering Range  -2 to 20 EV

Continuous Shooting  Up to 120 fps at Maximum Resolution

Interval Recording  Yes

Self-Timer  2/12-Second Delay

Aspect Ratio  4:3

Image File Format  JPEG, Raw

Bit Depth  14-Bit

Internal Recording  H.264/H.264 Long GOP/MOV/MPEG-4 AVC 4:2:0 8-Bit
                               4096 x 2160 at 24.00/25/30.00/50/60.00 fps (102 to 205 Mb/s)
                               3840 x 2160 at 24.00/25/30.00/50/60.00 fps (102 to 105 Mb/s)
                               1920 x 1080 at 24.00/25/30.00/50/60.00 fps (30 Mb/s)
                               H.265/H.265 Long GOP/MOV 4:2:0 10-Bit
                               4096 x 2160 at 24.00/25/30.00/50/60.00 fps (77 to 155 Mb/s)
                               3840 x 2160 at 24.00/25/30.00/50/60.00 fps (155 Mb/s)
                              1920 x 1080 at 24.00/25/30.00/50/60.00 fps (162 Mb/s)

Video Output  4:2:2/4:2:0 8/10-Bit via HDMI
                       4096 x 2160

Fast-/Slow-Motion Support  Yes

Gamma Curve  FLAT, HDR-HLG, OM-Log

Recording Limit  2-Hour Maximum in 4K

IP Streaming  No

Built-In Microphone  Stereo

Audio Recording  16-Bit 48 kHz LPCM Audio

Internal Storage  No

Video I/O  1x Micro-HDMI Output

Audio I/O  1x 1/8" / 3.5 mm TRS Stereo Headphone Output
                 1x 1/8" / 3.5 mm TRS Stereo Microphone Input

Power I/O  1x USB-C Input

Other I/O  1x USB-C Data Output (Shared with Power Input)

Wireless  Wi-Fi 4 (802.11n) / Bluetooth 4.2

Display Type  Articulating 3" Touchscreen LCD

Resolution  1,620,000 Dot

Viewfinder Type  Electronic (OLED)

Resolution  2,360,000 Dot

Eye Point  27 mm

Coverage  100%

Magnification  Approx. 1.23x

Diopter Adjustment  -4 to +2

Focus Type  Auto and Manual Focus

Focus Mode  Continuous-Servo AF, Manual Focus, Single-Servo AF

Autofocus Points  Phase Detection: 1053

Autofocus Sensitivity  -5.5 to +19 EV

Built-In Flash/Light  No

Flash Modes  Fill In, Flash On, Manual, Off, Slow Sync

Maximum Sync Speed  1/250 Second

Flash Compensation  -3 to +3 EV (1/3, 1/2, 1 EV Steps)

Dedicated Flash System  TTL

External Flash Connection  Shoe Mount

Battery  1x BLX-1 Rechargeable Lithium-Ion (Included)

Shoe Mount  1x Hot Shoe

Tripod Mount  1x 1/4"-20 Female

Materials  Magnesium Alloy

Operating Conditions  14 to 104°F / -10 to 40°C at 30 to 90% Humidity

Storage Conditions  -4 to 140°F / -20 to 60°C at 10 to 90% Humidity

Dimensions (W x H x D)  5.5 x 3.5 x 1.8" / 139.3 x 88.9 x 45.8 mm

Weight  0.9 lb / 413 g (Body Only)
             1.1 lb / 496 g (With Battery)