.RW2 · 2014 · 16 MP Micro Four Thirds

Panasonic Lumix GH4 RAW Files: Open, Cull & Edit .RW2 Free

A hybrid body that helped establish Micro Four Thirds as a serious video platform, used by run-and-gun filmmakers who also delivered stills. Photo output is often a smaller side product pulled from a primarily video-driven shoot. Because stills volume stays modest, quick review usually outweighs the need for heavy batch culling.

Panasonic Lumix GH4 RAW at a glance

RAW formatRW2 — Panasonic RAW 2 (.RW2)
Sensor16 MP Micro Four Thirds
Resolution16 megapixels
Typical RAW sizeabout 16-20 MB
Released2014
RAW options12-bit RW2 RAW, Panasonic's native format for Four Thirds sensors with no in-camera compression choice.

Editing Lumix GH4 files with imagic

imagic opens .RW2 files from the Panasonic Lumix GH4 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 16-20 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 Panasonic Lumix GH4 use?

The Panasonic Lumix GH4 writes RW2 files with the .RW2 extension. 12-bit RW2 RAW, Panasonic's native format for Four Thirds sensors with no in-camera compression choice.

How big are Panasonic Lumix GH4 RAW files?

Expect about 16-20 MB per frame from the 16 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 Panasonic Lumix GH4 .RW2 files for free?

imagic opens RW2 files from the Panasonic Lumix GH4 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 RW2

The Lumix GH4's .RW2 files share their structure with every Panasonic body using RW2 — the full RW2 guide covers compression variants, free openers, and conversion options in depth.

Other Panasonic bodies

Panasonic Lumix GH5 II Panasonic Lumix GH6 Panasonic Lumix S5 II Panasonic Lumix S5 IIX Panasonic Lumix G9 II Panasonic Lumix S9 Panasonic Lumix G7 Panasonic Lumix GX85

Cull a Lumix GH4 shoot before your coffee cools

AI quality scoring, duplicate grouping, and local batch processing for .RW2 — free for 7 days, no card required.

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