Average quality related price. Average efficiency also, at any less effective, for example portrait, a Lumiquest Pocket Bouncer which is more expensive but one of the best portable diffusers (from personal experience, and testing read in the journals). This little box to be really effective, should also be at least 2 times larger in diameter. His real interest is probably for photographing small objects in a mini photo studio or for macro photography? I would make an additional comment if I try it in these conditions.