As a party photographer, I had always problems with the exposure of a small group of people, as bounce flash on Party is often very difficult. Remedy the diffuser, which makes a bounce flash unnecessary and saves me a lot of work in terms of exposure. The diffuser sits very safe UAF my 430EX II and settled attach any problems. For a plastic part, of course, still very expensive, but the best alternative when it comes to price - therefore 5 of 5. Large differences I could as opposed to a 30 - festellen nich variant. Buy recommendation!