Ideal for portraiture and work in ambient light the 30" Collapsible Diffuser from Lastolite is handy for use in lowering contrast from a light source or to tame the harsh noonday sun. The 30" diameter disk is light enough to be handheld or attached to an optional holder. While not as effective of a solid white reflector, the diffuser does also have some moderate bounce-light capability. The diffuser folds down to 1/3 its open size to stow conveniently in the provided carry bag.