Tested yet just for few seconds, quality is good, holds on camera strong enough. it is bit deeper than original, but I do not see vignetting when using 4:3 4K wide on GoPro7 black. So it is perfect to my use. Happy with purchase. Not sure how it is scratch resistant, but even my expensive polarpro already got few and I did not even crashed with it on ground, just went thru some tree branches few times (using it on FPV drone). When mounted on camera, it is bit angled and there is visible small gap between camera and filter in bottom or top - depending how you mount it. But I did not noticed, that it would have some side effect.
Tested yet just for few seconds, quality is good, holds on camera strong enough. it is bit deeper than original, but I do not see vignetting when using 4:3 4K wide on GoPro7 black. So it is perfect to my use. Happy with purchase. Not sure how it is scratch resistant, but even my expensive polarpro already got few and I did not even crashed with it on ground, just went thru some tree branches few times (using it on FPV drone). When mounted on camera, it is bit angled and there is visible small gap between camera and filter in bottom or top - depending how you mount it. But I did not noticed, that it would have some side effect.