So, I got this after watching another content creator on youtube who recommended it to help with creating that blurry background we all love, even in your studio, by cranking up your lighting and then using this filter. I'm pretty new to the whole professional camera type of thing, so I can't explain exactly why it works, but it totally does! I have a ZV E10 (I know it's not considered "professional" but to me it is!) and was struggling to get the kind of look on my youtube talking head videos that I see other people getting with the same camera. This was sort of a 'hack' I guess but it's what it's designed to do for shooting outdoors in brighter light etc. Again, I don't know the technical reasons of what is happening here, but its something to do with shutter speed. I feel terrible for leaving a review for something that I don't exactly understand, but yet, I think maybe that's helpful to know you don't need to be a camera expert to benefit from using this filter because its pretty darn simple. Love it! I feel like I have an even more professional looking shot without having to get a PHD in film school to do it.