I just wondered what opinions there are on leaving a fader nd filter permanently attached to your lens. Do some of you take it off when shooting indoors, for instance, and then screw on a uv-filter. I tend to leave my Fader ND filter on all the time because it's too much of a hassle screwing it on and off, particularly if you screw on a UV-filter inbetween. But leaving it on does affect your picture. (haven't tested it but will soon...)
