Editing Cucoloris (section)

{{Short description|Theatrical lighting device}}
[[Image:Celo-cucoloris.jpg|thumb|right|A celo cucoloris casting a shadow]]
[[Image:NationalTreasureFilming.jpg|thumb|right|200px|Crew members on ''[[National Treasure (film)|National Treasure]]'' using a cookie]]

In lighting for [[film]], [[theatre]] and still [[photography]], a '''cucoloris''' (occasionally also spelled '''cuculoris''', '''kookaloris''', '''cookaloris''' or '''cucalorus''') is a light modifier (tool, device) for casting shadows or silhouettes to produce patterned illumination. It is normally referred to as a ''cookie'' or sometimes as a ''kook'' or a ''coo-koo''. The cucoloris is used to create a more natural look by breaking up the light from a man-made source. It can be used to simulate movement by passing shadows or light coming through a leafy canopy.