Bottom controls for the Caustics effect

Adjust the following Bottom controls to specify the appearance of the bottom of the body of water:

Bottom

Specifies the layer at the bottom of the body of water. This layer is the image that is distorted by the effect (unless Surface Opacity is 100%).

Scaling

Makes the bottom layer larger or smaller. If the edges of the bottom layer show, because of the refraction of the light through the waves, scale up the bottom layer. Scaling down is useful for tiling a layer to make a complex pattern.

Repeat Mode

Specifies how a scaled-down bottom layer is tiled. Once uses only one tile, basically turning tiling off. Tiles uses the traditional tiling method of abutting the right edge of one bottom layer tile to the left edge of another bottom layer tile. This option works well if the bottom layer contains a repeating pattern, like a logo, that needs to read a certain way. Reflected abuts each edge of a bottom layer tile to a mirrored copy of the tile. This option can eliminate a hard edge where the two tiles meet.

If Layer Size Differs

Specifies how to handle the bottom layer when it is smaller than the composition.

Blur

Specifies the amount of blur applied to the bottom layer. To make the bottom totally sharp, set this control to 0. Higher values make the bottom appear increasingly blurry, especially where the water is deeper.