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OM SYSTEM OM-D E-M1 Mark III Mirrorless Camera

The OM System E-M1 Mark III is a 20MP Micro Four Thirds mirrorless camera — with 4K video and in-body stabilization. Check GearFocus for current availability, with buyer protection on every purchase.

OM SYSTEM OM-D E-M1 Mark III Mirrorless Camera

OM SYSTEM OM-D E-M1 Mark III Mirrorless Camera

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Camera Overview — OM System E-M1 Mark III

The OM System OM-D E-M1 Mark III is a Micro Four Thirds mirrorless camera built around a 20MP sensor powered by the TruePic IX image processor. It offers an ISO range of 64 to 25600, giving photographers flexibility across a wide variety of lighting conditions. The camera's 5-Axis In-Body Stabilization — complemented by digital IS — helps keep footage and stills sharp, while the autofocus system combines Phase Detection, Contrast Detection, Eye Detection AF, and AI-Based Subject Tracking across 121 focus points for reliable subject acquisition.

Burst shooters will appreciate the 60fps maximum burst frame rate. Video capabilities reach 4K resolution with frame rates spanning 24fps through 120fps, an 8-bit color depth, and OM-Log400 among the available color profiles. The OLED EVF runs at 120Hz with a 2.36 million dot resolution, while the 3.0-inch Vari-Angle LCD offers 1.037 million dots of clarity.

Built from magnesium alloy with weather sealing, the body measures 134.1 x 90.9 x 68.9 mm and weighs 580g. Connectivity includes Wi-Fi, Bluetooth, USB-C, Micro HDMI output, and both 3.5mm headphone and microphone jacks. The Micro Four Thirds lens mount opens access to a broad ecosystem of compatible glass.

Key Features — OM System E-M1 Mark III

20MP MFT Sensor: The 20MP Micro Four Thirds sensor paired with the TruePic IX processor delivers detailed images with a 2x crop factor, giving telephoto reach advantage when using compatible lenses.

7.5-Stop In-Body Stabilization: 5-Axis IBIS combined with digital IS keeps both stills and video sharp during handheld shooting, including support for Sync IS when paired with compatible lenses.

60fps Burst Shooting: High-speed burst mode at up to 60fps (electronic shutter) allows precise capture of fast-moving subjects without mechanical shutter lag.

121-Point Hybrid AF: Phase and contrast detection across 121 points, with Eye Detection AF and AI-based subject tracking for reliable focus on moving subjects.

4K Video with OM-Log400: Records 4K footage with OM-Log400 profile available for greater dynamic range flexibility in post-production.

120Hz OLED Viewfinder: The 2.36 million dot OLED EVF at 120Hz provides a smooth, high-detail view that reduces lag during fast action shooting.

Camera Specifications — OM System E-M1 Mark III

OM System E-M1 Mark III full specifications
SpecDetail
Use CasesWildlife, Sports, Travel, Documentary
TypeMirrorless
SensorMicro Four Thirds (MFT)
Resolution20MP
ProcessorTruePic IX
ISO Range64 – 25600
AF SystemPhase Detection, Contrast Detection, Eye Detection AF, AI-Based Subject Tracking
AF Points121 points
Max Photo Resolution5184x3888
Burst Rate60 fps
Max Video Resolution4K
Max Frame Rate120fps

Description — OM System E-M1 Mark III

The OM System OM-D E-M1 Mark III is a Micro Four Thirds mirrorless camera featuring a 20MP sensor and TruePic IX image processor. Its ISO range of 64 to 25600 provides broad sensitivity across shooting conditions, while the 5-Axis In-Body Stabilization and digital IS work together to reduce camera shake. The autofocus system spans 121 focus points and combines Phase Detection, Contrast Detection, Eye Detection AF, and AI-Based Subject Tracking for confident subject acquisition.

Still shooters benefit from a maximum burst rate of 60fps, and the 5184x3888 maximum resolution supports detailed image capture. For video, the camera reaches 4K at frame rates from 24fps up to 120fps with 8-bit color depth and the OM-Log400 color profile available for grading. The 2.36 million dot OLED EVF runs at 120Hz, complemented by a 3.0-inch Vari-Angle LCD at 1.037 million dots.

The magnesium alloy, weather-sealed body weighs 580g and measures 134.1 x 90.9 x 68.9 mm, with connectivity including Wi-Fi, Bluetooth, USB-C, Micro HDMI, and dual 3.5mm audio jacks.

Pros — OM System E-M1 Mark III

  • ✓60fps maximum burst frame rate enables capturing fast-moving subjects with precision
  • ✓5-Axis In-Body Stabilization with additional digital IS for enhanced shooting stability
  • ✓Comprehensive autofocus system with 121 points, Eye Detection AF, and AI-Based Subject Tracking

Cons — OM System E-M1 Mark III

  • ✗8-bit video color depth may limit advanced color grading compared to higher bit-depth competitors
  • ✗Single card slot (SD/SDHC/SDXC only) with no backup redundancy for critical shoots
  • ✗Battery rated at approximately 420 shots per charge, which may require spare batteries for extended sessions

Reviews — OM System E-M1 Mark III

Videos — OM System E-M1 Mark III

Panasonic G9 vs. Olympus OM-D E-M1 Mark III: Which is the king of Micro 43? — DPReview TV

Resources & Downloads — OM System E-M1 Mark III

Manuals & Guides

Frequently Asked Questions — OM System E-M1 Mark III

What lens mount does the OM-D E-M1 Mark III use?+
The camera uses the Micro Four Thirds lens mount, giving access to the full range of Micro Four Thirds compatible lenses. It also features a standard ISO hot shoe for external flash accessories and supports a wireless RC flash system.
What video resolutions and frame rates does the E-M1 Mark III support?+
The camera records up to 4K video and supports frame rates of 24fps, 25fps, 30fps, 50fps, 60fps, and 120fps. Video is recorded at 8-bit color depth, and available color profiles include OM-Log400, Flat, Natural, Vivid, Portrait, and Monochrome.
Does the OM-D E-M1 Mark III have in-body image stabilization?+
Yes, it features 5-Axis In-Body Stabilization along with digital IS. These work to reduce camera shake during both still photography and video recording.
What autofocus features are available on this camera?+
The autofocus system uses a combination of Phase Detection and Contrast Detection across 121 focus points. It also includes Eye Detection AF and AI-Based Subject Tracking for improved subject acquisition in dynamic shooting situations.
What connectivity options does the E-M1 Mark III offer?+
The camera includes Wi-Fi, Bluetooth, USB-C, a Micro HDMI output, a 3.5mm headphone jack, and a 3.5mm microphone jack. These ports make it well-suited for external audio monitoring and tethered or wireless workflows.
What memory cards does the OM-D E-M1 Mark III accept?+
The camera accepts SD, SDHC, and SDXC memory cards. There is a single card slot, so there is no dual-slot backup option for redundant storage.

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