in past i got k&f ND filters and i wasn’t happy about them because the had horrible purple colour cast what i couldn’t get ride with photoshop, they were cheap. about £10 for 3 different ND filters with pouch. yeah... price does matter))) lol)) this one is NOTHING close to those what i use to have. it feels like i had ford ka and now i have ford mustang)))ok...i use 70-200mm is f4 and 10-18mm both have 67mm it’s really easy to change from ND2 to ND32 don’t need to unscrew your ND filter from lens, just spin the circle.there is NO COLOUR CAST. what is most important thing in ND filter. i would say i bought Nisi quality ND filter for twice less than Nisi.comes in hard storage case not pouch. so when you throw your ND filter in your camera bag , you don’t have to worry about that it will smash. i would definitely buy it again.