I use the Delamax diffuser together with the Metz mecablitz 58 AF-1. The diffuser fits like a glove - even better than the original diffuser (Metz Mecabounce 58-90). The Delamax is pushed onto the entire flash head and sits so perfectly - not like the Metz-diffuser, which is then pushed against the lens and can easily fall off.
Potraitaufnahmen are visibly softer. The color looks neutral. Usually I make a exposure compensation of +1/3. In order for the Metz flash switches to maximum wide angle, just the integrated lens hood must be removed.
The price is reasonable - compared to the usual prices. My strong buy recommendation!
