Light Panel Pro
Scan Backlight, mobile Softbox
Usage
One-finger Tap
Show LightPanel Settings.
Keyboard: ⌘S
One-finger Drag
Change screen brightness (unless showing Settings).
Two-finger Tap
Toggle between the scanning mask, alignment grid and none.
Keyboard: Grid - ⌘G, Mask - ⇧⌘M
Two-finger Drag
Move the alignment grid.
Zoom In/Out
Resize the scanning mask or the alignment grid.
Three-finger Long Press
Lock or Unlock LightPanel Settings.
Keyboard: ⌘L
Brightness
As well as just dragging your finger across the display, Screen Brightness can be controlled from the Settings panel:
Choose a preset value from the brightness buttons.
Enter a direct brightness value.
Drag the slider to taste.
Temperature
The approximate Colour Temperature of the screen can be controlled from the Settings panel:
Choose a preset value from the temperature buttons.
Enter a direct Kelvin temperature.
Drag the slider to taste.
Hue
LightPanel can display arbitrary colours, rather than using the selected colour temperature:
Tap the Hue button to quickly switch between Colour Temperature and Hue colours.
Enter or cut/paste HTML-style colour strings directly into the text field.
Tap on a colour patch to set that colour.
Tap on the colour slider thumb and drag along the slider to change Hue.
Tap on the colour slider thumb and drag up & down away from the slider to adjust Saturation.
Tap on the colour slider thumb and drag parallel to the slider to adjust Brightness.
Colour Patch Menu
Long-press on a colour patch brings up a menu with more options:
Set: Set LightPanel to the colour of this patch (same as tapping the patch).
Update: Save LightPanel colour to this patch.
Reset: Restore original colour of this patch.