Filter size: 77mmUsing a D5600 camera on 18-55mm Nikon lens, I get a solid results without any X or vignetting on the image even when the dial is set to Max. I shoot on a bright sunny afternoon and was able to get about 30sec exposure before the image becomes overexposed. So far, I’m not seeing a loss of image quality in terms of resolution orPros:-affordable-lightweight and compact-no vignetting or “X” mark on my images even when dial is set to Max.-have not gotten any scratches yet even after multiple use, though I’m very careful when handling it-a lock system so that it doesn’t go beyond the Min and Max settings-filter can go from ND2-ND1000 of course!Cons:-unable to be attached on a 77mm lens hood due to its size: the rings, the dial, and the filter in general-front thread is about 86-87mm so I’m unable to find a compatible lens hood-while filter is on the lens, an “X” marking appears on my camera’s viewfinder when I have my Polarized shades on, though it’s not on the images that gets captured.Final thoughts:I might replace this mainly because I’m unable to find a lens hood that can fit on the front. I’ve seen some glare on my pictures, but it can be prevented if I shoot away from a strong light source (but come on, not always avoidable, and I like having a lens hood :P)I will upload some sample images once I save my pictures as JPEG… bit lazy at the moment