.RAF · 2021 · 102 MP medium format

Fujifilm GFX 100S RAW Files: Open, Cull & Edit .RAF Free

A smaller, lighter body bringing 100-megapixel medium format to landscape and portrait photographers who found the original GFX 100 too bulky. In-body stabilization again encourages more handheld frames per setup than a tripod-only workflow would produce. File sizes this large make automated pre-edit culling a practical requirement, not a preference.

Fujifilm GFX 100S RAW at a glance

RAW formatRAF — Fujifilm RAW (.RAF)
Sensor102 MP medium format
Resolution102 megapixels
Typical RAW sizeabout 105-130 MB
Released2021
RAW options14-bit RAF RAW from a Bayer-pattern medium-format sensor, producing very large files.

Editing GFX 100S files with imagic

imagic opens .RAF files from the Fujifilm GFX 100S 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 105-130 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 Fujifilm GFX 100S use?

The Fujifilm GFX 100S writes RAF files with the .RAF extension. 14-bit RAF RAW from a Bayer-pattern medium-format sensor, producing very large files.

How big are Fujifilm GFX 100S RAW files?

Expect about 105-130 MB per frame from the 102 MP medium format 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 Fujifilm GFX 100S .RAF files for free?

imagic opens RAF files from the Fujifilm GFX 100S 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 RAF

The GFX 100S's .RAF files share their structure with every Fujifilm body using RAF — the full RAF guide covers compression variants, free openers, and conversion options in depth.

Other Fujifilm bodies

Fujifilm X100V Fujifilm X-S10 Fujifilm X-E4 Fujifilm X-T30 II Fujifilm GFX 50S II Fujifilm X-H2S Fujifilm X-H2 Fujifilm X-T5

Cull a GFX 100S shoot before your coffee cools

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

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