The integrated diffuser and integrated reflector work well, but also do not particularly high-quality impression.
The build quality is OK, the battery compartment cover is pretty hakelig that direction, as the batteries have to be inserted one must rather advise (red rings at the bottom of the battery compartment have the plus of)
The autofocus assist lamp does not work with System cameras, you should know that. So does not help to optimize the autofocus of the camera properties in the dark. But you can still manually.
All in all, the lightning in my view, thanks to the low price a very good buy!