Pavlos Euthymiou

I'm having the exact same problem. I already had it with other lenses and cheap nd filters on my XT2, but decided to buy this ND 2-400 KeF filter for my 70-300. I cannot get one photo in focus. Actually it is kind of in focus but with a terrible haze/halo effect. Even though the filter may not be the best quality in the world, it seems my XT2 cannot get proper focus/definition with an nd filter on. I can get good pictures with uv and cpl filters.