posted on : 05/21/12 by DisneyRob
Solid ND (neutral density) filters are great if you want to extend your shutter speed, but they can be used to control the aperture as well. A three-stop ND filter would allow you to open the aperture by three stops to get a shallow depth of field, even in bright conditions. This also helps with taking night time firework shots. You can leave your shutter open longer to catch the bursts of the fireworks without having them over exposed.