At first, I was skeptical about this filter because someone said this filter is not adjustable. That person is wrong. It is Adjustable.The filter quality is great. You can do the monitor test (i.e., 1) hold it in front of your eyes (directly, not through the camera), 2) look through it towards a brightly lit monitor, 3) rotate the CPL and you will see that the monitor will turn black and won't let light pass through.Some people said they had trouble un-attaching it from the lens because the CPL filter spins instead. In that case, slightly pull it upwards while trying to un-attach. Also, don't attach it too tight with the lens.Good luck!

Awesome filter! This is my first CPL so I can't really compare it to other CPLs, however this filter works far better than I expected based on the cheap price. I went with the filter because of Tiffen's reputation and was not disappointed. This works so well for car photography and videography by helping reduce glare from paint, windows, and wheels. I will definitely purchase more in the future once I have more lenses.

For less than the price of 3 Gopro ND filters you get a CPL filter and 5 different grade ND filters which is really good value for money. The optic is excellent and it fit perfect on my Gopro 9. Tested it under water and no leak, changing lens is easy with a twist as per OEM filters.The CPL filter now stay on my camera all the time, UK summer days is too bright for the action camera with lots of glare and the CPL does a great job at keeping all the reflection clear. The ND filters is great for getting low shutter speed.

Most people into photography will instantly recognize the name K&F Concept as makers of high quality photographic equipment and these GoPro lens filters are no different. Quality multi coated optics are used in both the CPL and ND filters.With this lens set you get three ND filters (ND stands for Neutral Density - more on this in a minute) and one circular polarize filter.The CPL filter is a circular polarize lens filter. These are used for reducing glare in your videos and photos. It also helps brings out the deep blue in skies when shooting the sky, clouds, etc.You can rotate the front of the CPL lens which is a great feature as it allows you to see what effect it's having on your color in real time as you turn it.The ND, or neutral density filters act basically as 'sunglasses' for your camera's lens and sensor. They come in 8, 16 and 32 stops reduction which gives you plenty of variety and choice.One fairly typical use of a ND filter would be for taking a photo of a waterfall. You want that classic picture of a static landscape BUT with the water showing movement and flow.In order to achieve this, you'd have to deliberately overexpose the shot in order to give the water motion however in doing this, everything else in the picture (besides the waterfall) will be blown out and overexposed to the point of almost total whiteness!Now, if you place a ND filter on the lens, you're forcing the shutter to stay open longer resulting in a perfectly exposed picture with the flowing water in the waterfall.This is a great lens kit to have in your GoPro gear bag.

Great filter set compatiable with Phantom 4, metal filter rings, coated glass lens :UV and CPL is double side coated which improves light transmissionVariable ND is not coated at allND 16 is coated in the front of the lens onlyWeight of UV and ND16 is undetectable on my kitchen scale, while VariableND and CPL which have a rotatable ring design is weighted at 20 gram/7ozEven with the weight of two heavier filters, when gimbal is powered on and calibrated, they do not drag the lens head downwards (the head is pointed straight/level with horizon)Update:Tried the Variable ND filter,the image quality suffered significantly, 4k footage looks like it was shot in 720p. Nothing is sharp. So the Variable ND filter is pretty much useless.One major drawback of using this filter set is that the gimbal lock/camera protector can not be used due to extended filter ring size being bigger than the original filter ring. (See included photo) I wish there is an aftermarket lens cover that can work with this filter set.

In my opinion it is one of the best CPL for beginners.The only downside is that while rotating the filter, it makes noises. Other than that, there's no weird vignetting or anything else.

This filter is great. I've used other CPL filters and there always seemed to be quirks about them, whether it be sticky rotations, hard to mount or un-mount on the lens, or coloration of the image. This filter had none of those issues. It goes on easily and with a positive feeling that you have some comfort it won't fall off while you're shooting, which has happened to me before, and it operates smoothly from behind the viewfinder. I have found no coloration from this filter at all, just the elimination of glare and deepening of colors where it's supposed to do so. The ring itself is nicely dimpled so that you can easily feel where to grab and turn without looking.This filter is light but feels very strong in construction, made to be used over and over for years, and it is thin enough that I had this and a matching ND filter stacked on a 16mm lens without any vignetting. I am totally satisfied with this filter and enthusiastically recommend it to anyone that needs a CPL, or needs to upgrade from what they already have.

I took these shots with and without filter, difference is very huge. The more green one is with filter and other is without