.ORF · 2022 · 20 MP Micro Four Thirds

OM System OM-1 RAW Files: Open, Cull & Edit .ORF Free

OM System's flagship stacked-sensor body, rebranded from Olympus and built for wildlife and birding photographers needing extreme burst speed. Pro Capture mode at up to 120 fps can produce enormous frame counts from a single moment of action. This combination makes automated culling essential rather than a convenience for typical OM-1 shoots.

OM System OM-1 RAW at a glance

RAW formatORF — Olympus RAW Format (.ORF)
Sensor20 MP Micro Four Thirds
Resolution20 megapixels
Typical RAW sizeabout 18-23 MB
Released2022
RAW options12-bit ORF RAW, uncompressed, from OM System's stacked Four Thirds sensor.

Editing OM-1 files with imagic

imagic opens .ORF files from the OM System OM-1 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 18-23 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 OM System OM-1 use?

The OM System OM-1 writes ORF files with the .ORF extension. 12-bit ORF RAW, uncompressed, from OM System's stacked Four Thirds sensor.

How big are OM System OM-1 RAW files?

Expect about 18-23 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 OM System OM-1 .ORF files for free?

imagic opens ORF files from the OM System OM-1 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-1'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 OM System bodies

OM System OM-5 OM System OM-1 Mark II

Cull a OM-1 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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