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— Grid 1/Grid 2 tabs: Since the Chroma-Luma controls expose two grids representing two different ranges of hue and luma, these two tabs let you choose which grid will be manipulated when you sample the image in the Viewer, as well as which grid the Tools controls affect.
— Selection Tool: The default tool mode. Selecting this tool lets you select control points either individually (by clicking on a single point or command-clicking multiple points) or collectively by dragging a bounding box over multiple points. You can also Shift-click with this tool to lock points into place without moving them, and you can right-click on control points to de-select, unlock, and reset them. This is the most useful tool to use when manipulating the image by clicking and dragging in the Viewer to sample a color and adjust it at the same time.
— Draw Selection: Selecting this tool lets you make a selection of control points by clicking and dragging to draw over all the points you want to select. This is good for making large, but specific, selections of points.
— Pin/De-Pin: Selecting this tool lets you pin multiple control points by either clicking on them or by clicking and dragging to draw over all the points you want to pin/de-pin.
— Pull Points: Selecting this tool lets you make adjustments by clicking anywhere on the warp grid, even between points, to pull all neighboring control points towards where you clicked. This can be used to reduce color contrast within a specific range of colors.
— Push Points: Selecting this tool lets you make adjustments by clicking anywhere on the warp grid, even between points, to push all neighboring control points within a particular proximity away from where you clicked. This can be used to increase color contrast within a specific range of colors.
Modifiers
Each of the Modifier buttons let you manipulate selections and selected control points on the warping grid in different ways immediately upon clicking each button.
The Modifier buttons
— Increase Falloff/Smooth Selection: If you’ve selected one or more control points, clicking this button expands the selection to include all adjacent control points surrounding the selection.
— Decrease Falloff/Smooth Selection: If you’ve selected a group of control points, clicking this button shrinks the selection by deselecting the outermost ring of selected control points, leaving the inner control points selected.
— Invert Selection: Clicking this button selects all unselected control points, and de-selects all selected control points. This is useful when you want to make separate color adjustments to both specifically selected halves of the warping grid.
— Convert Selection to Pin: Clicking this button pins all currently selected control points.
— Select/Pin Column: If you have one or more control points selected, clicking this button expands the selection to include all points on every column that have at least one selected point.