Delivery time:
The delivery time has been exceeded with me a few days, which pleasantly surprised me. So I was able to test something on the weekend.
Feel:
As fully expected from plastic and not particularly valent, the first tab for the Velcro was broken already in the delivery, but I fixed with superglue that's enough for me and will keep well. A conversion is not worth it for me.
The diffuser is self-explanatory in installation and use, and as such relatively "foolproof", you should be a little careful just in handling, want to break something nothing.
Function:
Such a diffuser is softer flash light and reduces or eliminates harsh shadows, and does exactly this too - even not so bad. For me and my occasional inserts in the amateur that just fine, so I am fully satisfied with this solution and need (currently) no Most significant. In this respect, the price / performance ratio is very good in my opinion.
I think I have got a few more money for than I could have expected.
Personal conclusion:
Haptics: max. 3 stars
Function: 4 stars (it's still better)
Price / performance ratio: 5 stars
Overall: 4 stars.