.ORF · 2020 · 20 MP Micro Four Thirds

Olympus OM-D E-M10 Mark IV RAW Files: Open, Cull & Edit .ORF Free

An entry-level travel and lifestyle body with a flip-down screen aimed at casual photographers and vloggers. Shoots tend to be casual travel folders with moderate frame counts rather than high-volume events. Quick sorting after a trip is the typical workflow rather than managing large duplicate sets.

Olympus OM-D E-M10 Mark IV RAW at a glance

RAW formatORF — Olympus RAW Format (.ORF)
Sensor20 MP Micro Four Thirds
Resolution20 megapixels
Typical RAW sizeabout 18-22 MB
Released2020
RAW options12-bit ORF RAW, uncompressed.

Editing OM-D E-M10 Mark IV files with imagic

imagic opens .ORF files from the Olympus OM-D E-M10 Mark IV natively on Windows and macOS. Point it at a card or shoot folder and it builds previews, scores every frame for sharpness, closed eyes, and composition, and groups near-duplicate bursts — so a full shoot collapses to its keepers before you edit anything.

Processing runs through the bundled RawTherapee engine, entirely on your machine: batch-apply one look across the keepers and export JPEGs in a single pass. Nothing uploads, which matters at about 18-22 MB per frame. The 7-day trial is full-featured and needs no card; licenses are one-time, from €19.

Frequently asked questions

What RAW format does the Olympus OM-D E-M10 Mark IV use?

The Olympus OM-D E-M10 Mark IV writes ORF files with the .ORF extension. 12-bit ORF RAW, uncompressed.

How big are Olympus OM-D E-M10 Mark IV RAW files?

Expect about 18-22 MB per frame from the 20 MP Micro Four Thirds sensor, depending on compression settings and scene detail. A full shoot adds up quickly, which is why culling before editing matters on this body.

How can I open Olympus OM-D E-M10 Mark IV .ORF files for free?

imagic opens ORF files from the Olympus OM-D E-M10 Mark IV natively on Windows and macOS — the 7-day trial needs no card. It culls the shoot with AI quality scoring, groups duplicates, and batch-processes keepers locally through its RawTherapee engine.

More about ORF

The OM-D E-M10 Mark IV's .ORF files share their structure with every Olympus / OM System body using ORF — the full ORF guide covers compression variants, free openers, and conversion options in depth.

Other Olympus bodies

Olympus OM-D E-M1 Mark III Olympus OM-D E-M5 Mark III Olympus OM-D E-M5 Olympus OM-D E-M1 Olympus OM-D E-M5 Mark II Olympus PEN-F Olympus OM-D E-M1 Mark II Olympus OM-D E-M10 Mark III

Cull a OM-D E-M10 Mark IV shoot before your coffee cools

AI quality scoring, duplicate grouping, and local batch processing for .ORF — free for 7 days, no card required.

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