Not always there. The whole Grade tab disappears in B&W mode.

Spectrogram finishing

In the app, the beside the Spectrogram finishing block says:

Shifts one colour range at a time without touching the others: turn a point around the wheel to move that colour's hue, out or in to make it stronger or greyer. Click a point, then use the arrow keys.

Eight colour ranges on a wheel, sixteen points: the filled one carries hue and saturation, the hollow one luma. Click a point, then drag or use the arrow keys; the four keys below nudge the selected band.

Spectrogram wheel

Spectrogram wheelGrade · Spectrogram finishing

Red+0° · +0% · +0%

At rest.

A colour mixer drawn as a wheel: eight fixed colour ranges, each with a hue and saturation point and a separate luma point, sitting between the curves and the finishing balance.

More about Spectrogram wheel

In the Grade tab of the settings panel. Inside the Spectrogram finishing block. The whole Grade tab disappears in B&W mode.

The block’s own opens Grade › Spectrogram finishing in this manual.

Carried by a preset
Yes: a preset and Paste settings carry the whole "spectrogram" row.
  • Turn the filled point around the wheel to shift a colour's hue; drag it out to strengthen it, in to grey it.
  • The hollow point lightens or darkens that one colour alone, leaving its hue and saturation ratio unchanged.
  • Range centres are fixed and a hue can only travel a few degrees short of its neighbours; ranges never cross.
  • Best for one wrong colour among right ones, or skin tones straddling orange and red, nudging both bands a little.
  • Not for a cast over the whole print: that is the balance or the two filters in Color.

Keyboard step

Keyboard stepGrade · Spectrogram finishing
Keyboard step2.0% of travel
At rest. Drag it: this one moves.

How far one arrow-key press moves the selected point on the Spectrogram wheel, as a share of the axis: two percent at rest, from half a percent to ten.

More about Keyboard step

In the Grade tab of the settings panel. Inside the Spectrogram finishing block. The whole Grade tab disappears in B&W mode.

The block’s own opens Grade › Spectrogram finishing in this manual.

Range
0.5% of travel to 10.0% of travel as shown (0.005 to 0.1 stored)
At rest
2.0% of travel
Double-click returns
2.0% of travel
Right end
10.0% of travel shown
Carried by a preset
Nothing to carry: it is a preference of yours (spectrogramStep), not a setting of the photo, and it is not written to the sidecar.
  • A preference, not a photo setting: kept across photos and sessions, never written to the sidecar or a preset.
  • Unaffected by the block's reset key, and does nothing on its own; only the next press uses it.
  • Working by keyboard: set it large to get near, then small to land on the band.
  • Leave it if you move points by dragging; a drag ignores this setting.

Finishing balance

Three channel sliders seen through five tone zones, after the conversion. The tab bar lives inside the block because the zones are one control seen through several windows; Black travels a quarter as far as the others.

Finishing balanceGrade
Cyan ↔ Red+0.00
Magenta ↔ Green+0.00
Yellow ↔ Blue+0.00
At rest. Drag it: this one moves.

Five zone sliders, Black, Shadows, Mids, Highs and White, tint the print channel by channel: cyan to red, magenta to green, yellow to blue, acting after the inversion on the already positive image.

More about Finishing balance

In the Grade tab of the settings panel. Inside the Finishing balance block. The whole Grade tab disappears in B&W mode.

The block’s own opens Grade › Finishing balance in this manual.

Cyan ↔ Red

Range
-2.00 to +2.00 as shown (-2 to 2 stored)
At rest
+0.00
Double-click returns
+0.00
Right end
the Red end of the gradient

Magenta ↔ Green

Range
-2.00 to +2.00 as shown (-2 to 2 stored)
At rest
+0.00
Double-click returns
+0.00
Right end
the Green end of the gradient

Yellow ↔ Blue

Range
-2.00 to +2.00 as shown (-2 to 2 stored)
At rest
+0.00
Double-click returns
+0.00
Right end
the Blue end of the gradient
Carried by a preset
Yes: a preset and Paste settings carry the whole "toneBalance" row.
  • Good for split toning: warm the shadows and cool the highlights, or the reverse, one zone at a time.
  • A tint confined to one part of the range, unlike the balance keys or the filters, which act on the whole print.
  • Black and White allow only small moves; the three middle zones allow larger ones, following their own ranges.
  • Not for a whole-print cast: that is the balance keys or the Source balance, applied before the inversion.

Zone saturation

Grey or saturated, separately in the shadows and in the highlights, with the frame's own split printed under the sliders. Brightness is unchanged.

Zone saturationGrade
Shadows · gray ↔ saturated+0%
Highlights · gray ↔ saturated+0%
At rest. Drag it: this one moves.

A saturation slider for the shadows and one for the highlights, the print split at mid grey: left greys a zone toward black and white, right strengthens it, without moving brightness in either.

More about Zone saturation

In the Grade tab of the settings panel. Inside the Zone saturation block. The whole Grade tab disappears in B&W mode.

The block’s own opens Grade › Zone saturation in this manual.

Shadows · gray ↔ saturated

Range
-100% to +100% as shown (-1 to 1 stored)
At rest
+0%
Double-click returns
+0%
Right end
the saturated end of the gradient

Highlights · gray ↔ saturated

Range
-100% to +100% as shown (-1 to 1 stored)
At rest
+0%
Double-click returns
+0%
Right end
the saturated end of the gradient
Carried by a preset
Yes: a preset and Paste settings carry the whole "saturation" row.
  • Muddy, over-coloured shadows: move Shadows left to clean them without touching the lit parts. A harsh, over-coloured highlight: move Highlights left, keeping the shadows untouched.
  • A pale sky or pale skin already right in the shadows: nudge Highlights to the right. For a quiet, low-key look: push Shadows toward grey and leave the highlights alone.
  • Often moved in opposite directions at once, the split most negatives want.
  • The block shows the measured split of the frame between shadows and highlights, on the output.
  • Not for the whole print: that is the Colour density slider, in Color.

How every slider works

How every slider in the app works
  • Drag anywhere on the row: the value moves by how far your hand travelled, it does not jump to where you clicked. That is what makes a fine adjustment possible without aiming.
  • Hold ⌥ while dragging and the travel is divided by five.
  • Scroll sideways on the trackpad over a slider to nudge it.
  • Double-click to return to the base value, which is not always the resting one: on Sharpening amount it is zero, the one gesture that switches the stage off.
  • Keyboard: once a slider has the focus, the arrow keys move it by a hundredth of its travel.
  • A slider whose track is anchored puts one named value at the middle of its travel; the two halves are linear but not equal.
  • A bipolar slider shows no fill: its whole track is the gradient between its two ends, because it is a balance between two hues, not a quantity.