thumbs up!! great lens!
I wanted to add a polarized lens to my new GoPro 7 Blacks and ordered these Sandmarc filters on-line via their shop. I received them filters quickly and could not be happier with their product. If you are shooting over water with you GoPro - you should be using these !
It works perfect I really loved the product. I got to know you guys from a Instagram app
What a filter!! Wow
Use it on my Go Pro hero5 black. With the filter on, it made my photo look good. easy to fix on. just plug and play.