The Filter Gallery provides a preview of many of the special effects filters. You can apply multiple filters, turn on or off the effect of a filter, reset options for a filter, and change the order in which filters are applied. When you are satisfied with the preview, you can then apply it to your image. Not all filters in the Filter menu are available in the Filter Gallery.

Display the Filter Gallery
Choose Filter > Filter
Gallery. Clicking a filter category name displays thumbnails of
available filter effects.
Zoom in or out of the preview
View another area of the preview
Hide filter thumbnails