Flash Diffuser Softbox for Canon Nikon Sony Olympus Sigma Metz Yongnuo Nikon SB900 SB800 SB700 SB600 SB28 SB26 SB24 SB80DX SB28DX Canon 580EX 430EX 550EX 580EXII 430EXII 540EZ 420EX 380EX Sony F58AM F56AM F42AM F36AM 5600HSD Minolta Pentax AF540FGZ AF360FGZ 5400HSD 3600HSD Olympus F-50R F-36R Nissin Di866 Di622 Di466 Sigma 500DG 5300DG Oloong SP-660 SP-660II SP-680 SP-690 SP-690II YN-462 YongNuo YN-460 YN-460ii YN-465 YN-467 YN-560 YN-560II YN-468 YN- 565EX Metz 76MZ 54MZ 58AF 44AF PZ42X Sunpak PZ40X 40MZ2 54MZ3 PZ30 DC331 (Electronics)
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