The filter does a nice job for darkening a blue sky and providing nice contrast. It also help reduce reflections.For the price it is good, but is not as good as the more expensive Nikon polarizer.

Works great. It would be good to put somewhere how to focus using it and the lens. It only auto focus' with certain camera and lens combinations and with some there is a trick to it, otherwise you have to manually focus. But it is a great addition to my lens collection.

I am finding that even keeping the camera on auto for video it is useful to use an ND filter when it is bright. These are well machined, the circular polarizer works well, and the range from 8 to 64 is just right for anything but bright snow or water.

Great value. Pictures look good with filter. Provides camera lens protection. Lens cap fit with filter on.

Something I wish I'd understood when I bought this -- the camera's lens can only focus to about two feet away -- so let's say you want to talk to someone from slightly further away? You're out of luck. Within two feet, it's a great webcam with decent auto-adjustment, though it's auto-exposure is sometimes kind of wack.

This filter acts a protection cover for my camera's lens.

Great for darkening sky and increasing contrast on petroglyphs.

I love the picture quality. It is a rather large camera with a larger lens than seen on most webcams. I'm not crazy about the rubber lens cap that hangs from it when in use, and would like a way to switch off the auto framing feature from the camera directly, thus the reduction of a star. Still I find it much better than my prior camera and the sharpness and brightness of the 4K image is impressive. The built in microphone is fine, though not noticeably better (or worse) than other webcams I've used. There is no software included in the box to load (only a QR code for downloading it), but it is was plug and play on my Mac. I was able to immediately use for a Zoom call within seconds of plugging it in. The auto framing feature worked well as I moved about, though also moves around when you just lean a little left or right which can be distracting. I think to justify the price they should have a switch to the camera to disable the auto tracking feature especially for legacy Mac machines that can't load the 64-bit software they provide on the website.