Used for long pauses picture (amateur). Well made, no a priori default. Used with 2 devices: An SLR with a 50mm fixed focal length lens and a bridge with a filter adapter ring. despite the pause time limited to 8 seconds on the bridge allows the ND1000 to make pretty pictures. With the reflex for now I have not had the opportunity to exceed 30 seconds in the sun but the first tests were quite satisfactory.