Tools

Details

In the app, every tool's ⋯ menu ▸ Help opens its section here; hover any slider for a short explanation.

Focus

A 100 % crop of the processed image that updates with every change: check sharpness, noise and detail without zooming the viewer.

Focus Area: Image Center, Center to Eye (uses the detected faces) or Custom — drag inside the preview to move it.
The crop is taken from the processed image, so it shows sharpening, noise reduction and grain exactly as exported.

Sharpens fine luminance detail; the threshold protects smooth areas and noise.

Parameter	What it does
Amount	Strength of the sharpening.
Radius	Size of the detail that is sharpened (percentage of the short side).
Threshold	Detail below this is left alone (protects skies, skin and noise).
Halo Suppression	Limits the bright and dark lines sharpening adds along edges.

Luminance and colour noise reduction and hot-pixel removal on the scene-linear image, for every decoder.

Parameter	What it does
Luminance	Smooths brightness noise while keeping edges.
Details	How much fine texture is kept while smoothing (higher = more detail, more noise).
Color	Removes colour blotches (chroma noise).
Single Pixel	Removes hot and dead pixels that stand out from their neighbours.

Runs before every other adjustment on the scene-linear image, so it works the same with the direct DNG decoder and Apple's RAW engine.
Start with Luminance and lower Details until the noise is gone; raise Details to bring texture back. Color fixes blotchy shadows; Single Pixel only when hot pixels are visible.

Removes purple and green colour fringes along high-contrast edges (chromatic aberration).

Parameter	What it does
Defringe	Strength of the purple / green fringe removal along edges.

Only colour that sits on a strong luminance edge is affected; purple objects away from edges keep their colour.

Smooths the colour ripples that fine repeating patterns produce, keeping detail.

Parameter	What it does
Amount	Strength of the colour smoothing in patterned areas.
Pattern	Size of the colour ripples in pixels (larger smooths wider patterns).

Pattern is the size of the colour ripples in pixels: match it to the moiré you see, then raise Amount.

Heals sensor dust and specks: automatically in smooth areas, or spot by spot with the Heal cursor tool.

Parameter	What it does
Spot Size	Diameter of new spots, as a percentage of the short side.

Remove Dust scans smooth areas (skies, backdrops) for dark specks and adds a spot for each.
Heal Spots (O) turns on the Heal cursor tool: click a speck to add a spot, drag a circle to move it, [ ] resizes, Delete removes the selected spot.
Spots are stored on the uncropped image, so they stay in place when you crop or rotate, and they export with the image.