This diffuser has done its job, namely diffuse the light of the flash to gently lead the shadows without burn some areas, particularly on faces. I use a flash Canon 430 EX II and I must say they get along famously. Indoors, I prefer indirect lighting, ie with flash diffuser + directed to the ceiling. This is what gives me the best results. This diffuser is simple in design, it fits perfectly to the Canon flash setting by simply clipping them. It is very easy and quick. Frankly, if you have a flash, so please complete your ensemble with this diffuser. This is an excellent choice. In short, this diffuser is the little "extra" that makes all the difference.