another update on a software project

Kokubunji, 2026.03.31

editing micro-four-thirds RAW photos

I'm working on a software project: a photo editor for micro-four-thirds RAW images.

Workflow

The name "Fourtify" says it all — it's a first-pass tool for m4/3 shooters. Four-thirds RAW in; TIF out: Fourtify! Cull a folder, apply tonal and color corrections, level/crop, export JPEGs for proofing or delivery, and only send the keepers into PhotoLab or Affinity for heavy work (lens corrections, masking, layers). It's the triage step that currently either doesn't exist or happens slowly inside a full DAM.

Non-destructive sidecars

All adjustments are stored in companion sidecar files. The RAW is never touched. Users who already have Photolab/Affinity sidecars won't conflict.

Processing fidelity for a "simple" tool

Even though it's lightweight, the pipeline does real work: linear-light tone processing (decode gamma → adjust → re-encode), Rec.709 luma weights for saturation/vibrance, bell-curve tonal zones, and bilinear rotation. The preview is numerically matched to the export.

Panasonic-specific details

I have been working with Panasonic and Olympus/OM System files as I develop this.- Roll-angle reading from MakerNote EXIF with a one-click Level button — useful for handheld telephoto work - The "Camera look" preset reconstructs the embedded JPEG tone/color rendering, so you can start from something familiar rather than a flat RAW.

Keyboard-first operation

Arrow keys to navigate, r/l to rotate 90°, e to open the export dialog, x to re-run the last export silently. Del for rapid culling, the mouse barely needs to move.

What it deliberately omits

This is worth being explicit about for that community: no DAM, no keyword/rating system, no lens correction, no spot healing, no layers. We already have Photolab for lens profiles and Affinity for compositing. What we're missing is a fast, accurate, local-first step before that.

Privacy / local-first

Fully offline, no telemetry, no subscription. A small binary.

Features

Navigation & UI

Folder tree + thumbnail strip, arrow keys to navigate photos
Session restore (last folder + photo on relaunch)
Dark and green themes
Resizable right panel

Editing (non-destructive sidecars)

White balance (temp/tint) with eyedropper
Exposure, Contrast, Highlights/Shadows/Whites/Blacks, Saturation, Vibrance
Unsharp mask sharpening + Gaussian denoise
Rotation slider + r/l 90° keys, camera tilt auto-detect with one-click Level
Crop with pan + resize handles, ratio presets
"Camera look" preset matching the embedded JPEG