Review on Enhance Your Phone Photography with Neewer 37mm Lens Accessory Kit - 📷 Wide Angle, Color Filters, CPL and ND Filters for iPhone, Samsung, Huawei, and More by William Hilzer

I take photos with my iPhone seriously. I've been a professional photographer since 2005 and now use my iPhone as my main camera. The filters seem well made for smartphones, but they're actually made for ILC cameras, so here's the problem. An ND filter has a warm color shift characteristic of lower quality filters. However, the color change is not so easy to fix, you have to live with it. That's not a problem for me, because I like my pictures to be a little warm. The problem with gradation filters. Because they're designed to cover the large lenses on a mirrorless camera, the gradation is too smooth, and when mounted on a smartphone with a small sensor, the camera doesn't capture the gradation at all. The extra lens is fine at best. I'd save your money and buy the variable ND I've seen at Revain for less than $15 and get the CPL separately, or if you have a camera with a 37mm filter thread on the lens that could be a good deal be. Just note that half of the filters you get won't work with a smartphone.