Pre-flashing
In cinematography and photography, pre-flashing is the exposure of the film or other photosensor to uniform light prior to exposing it to the scene to be imaged. This adds a bias to the overall light input recorded by the sensor.
It is sometimes used for artistic effects, as it can be used to add a colour cast to shadows without significantly affecting highlights.
It is also used in fields such as astronomy to bias CCD image sensors into a linear region, improving their low-light sensitivity.
Sources and credits
This article is adapted from the Wikipedia article “Pre-flashing”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Fathomly is not affiliated with or endorsed by the Wikimedia Foundation. Spotted a problem? Tell us.