Filter with a neutral colour for specific reduction of the amount of light suitable for lenseszoom lenses with a filter thread for digitalanalogue photo system and video cameras is also a uv filter neutral colour 4x exposure correction 2 f numbers grey x 4 d 060 with a front thread for an additional filter a lens cap or a lens hood htmc coating four layers on each side for very good spectral transparency quality standard glass high quality lens glass impact on the pictures allows large apertu