Lee Seven5 Little Stopper

A glass filter that reduces exposure by approximately 6 stops. 

At six stops, the Little Stopper is ideal for those low-light conditions at the beginning and end of the day (when the Big Stopper's ten stops may prove too much), allowing you to enjoy increased flexibility with exposure lengths. In many shooting conditions, this means that detail and texture in areas of movement such as the sky and water would be reatined, while still conveying a sense of time passing.