Use Focal B&W to create a black-and-white image from a color photo while leaving a selected, circular area in color. Applied carefully, this unusual effect can create the appearance of a partially hand-colored photo.
The Size control setting determines the focal point's radius. Use the Sharpness control to feather the focal point circle's edges (when moved to the left) or to display hard edges (when moved to the right).
This photo was selected because it's almost perfect for the Focal B&W effect. The dress and most of the background elements are black, white, or a shade of gray. When applying Focal B&W effect to a typical color photo, you'll find it difficult to colorize only a single item (as was done with the feather boa).