Then it's a simple, not complicated.
It semboîte perfectly on my 430ExII, diffusion is pretty good, and I get a very good record on my photos.
I do not regret my purchase worth actually complement a flash, because given the small price it is well worth the cost. Moreover, I pile a soft spot in my camera bag or store without the abyss.
If there is the even more opaque, it may be worth the cost in some cases, but I have not found
I will recommend them widely seen little investment, it allows you to try a low rate if this accessory will be useful, personally I often use it on my flash
