The Lee Seven 5 Neutral Density (ND) 1.2 Graduated Soft filter for compact system cameras enables users to adjust the exposure across the frame by 4 stops, without affecting the colour balance. This filter features a soft transition & gently balances exposure when there is no definite transition between sky & foreground, for instance woodl&, mist & interiors. The Lee Seven 5 filter holder & an adapter ring are necessary to keep the filter in place.