An exposure long enough to blur moving elements such as water, clouds or stars — typically from 1/4 s to minutes.Put it to useNd filter calculatorGuides that use this termLong Exposure Landscape PhotographyAstrophotography Settings Cheat SheetHow to Choose a TripodStar Trails PhotographyBuying Used Camera Gear ChecklistExposure Blending for High-Contrast ScenesRelated termsKp indexLeading linesLight pollutionLuminosity maskMacro photographyMeteor shower