A little impression from today,
Today i got the filter and this evening we did a succesfull calibration.
First the product itself:
The product fits perfect on the sony lens and looks good.
After we placed the filter you saw directly that the lumen output got worse,
But gladly the sony has enough lumens to spare.
So this we could compensate easy.
For calibration details i cant comment thats a part of the guy who did it for me.
Ofcourse where the colors way off before the calibration,but after they where good again.
After watching some of my favourite scenes i can comment that indeed the black level is better(as was this already very good on the sony)
So if you wanne push the sony to its limits then this is a nice option.