The PGYTECH ND filter that I asked my China Contact to order for me just arrived this evening, will have to wait till tomorrow to give them a try but contruction seems solid and the attach well to the OP. Here's some pictures

https://i.imgur.com/6tcpcv2.jpg
https://i.imgur.com/qMmWAPr.jpg
https://i.imgur.com/F9HHi0u.jpg
https://i.imgur.com/KpWldMo.jpg
https://i.imgur.com/vjHDZ6S.jpg

Nice one! Thanks for sharing!

Hi there, we do appreciate you interest in our products. If you need any help, please don't hesitate to contact us. Thanks for choosing DJI!

Does the OP still fit inside the protection case with attached filter?

Webcruise Posted at 12-29 12:38
Does the OP still fit inside the protection case with attached filter?

Unfortunately no but the ND filter case is pretty compact to carry
Correction. The Filter will fit just fine in the case.

Webcruise Posted at 12-29 12:38
Does the OP still fit inside the protection case with attached filter?

Hey,

Our Freewell filter do fit in OP case with filter attached take a look at review made to display the same.


If you have any question please feel free to get in touch on care@freewellgear.com

Thanks
Harry from Freewell

Freewell Posted at 2018-12-31 02:21
Hey,

Our Freewell filter do fit in OP case with filter attached take a look at review made to display the same.

Hello,
do you have shipping to Bulgaria ? Last time I couldn't order any of your filters, because I couldn't find such option for delivery to Bulgaria.

Webcruise Posted at 2018-12-29 12:38
Does the OP still fit inside the protection case with attached filter?

Hi, YES they are. I bought mine a weeks ago. And since then I use as regular ND8PL on my OP, even when I put it in the carrying case.