The diffuser is actually not bad, but he turned off at the Canon EOS 600D at Ausfstecken the built-in flash, as well as the strap is a bit narrow. Only after a few corrections (on the trigger side grinding bit) it can be used, then it works well. The problem of Blitzzdeaktivierung expected but exist in all Aufsteckdiffusoren. The seller gave helpful hints and also the withdrawal in failure.