Editing Exposure (photography) (section)

===Overexposure and underexposure===
{{Redirect|Underexposure|the 2005 film by Oday Rasheed|Underexposure (film)}} <!-- [[Overexposure]] redirects here too. -->
[[File:Stühle Froschperspektive.jpg|thumb|White chair: Deliberate use of overexposure for aesthetic purposes]]

A photograph may be described as ''overexposed'' when it has a loss of highlight detail, that is, when important bright parts of an image are "washed out" or effectively all white, known as "blown-out highlights" or "[[Clipping (photography)|clipped whites]]".<ref>{{cite web | url = http://www.illustratedphotography.com/basic-photography/iso-and-film-speed | title = Basic Photography&nbsp;— ISO and Film Speed | author = Ed van der walt | access-date = 2 July 2011}}</ref>  A photograph may be described as ''underexposed'' when it has a loss of shadow detail, that is, when important dark areas are "muddy" or indistinguishable from black,<ref>{{cite book | title = Digital Photography: Top 100 Simplified Tips & Tricks | edition = 4th | author = Rob Sheppard | publisher = John Wiley and Sons | date = 2010 | isbn = 978-0-470-59710-1 | page = 40 | url = https://books.google.com/books?id=3M0CZb4dFSgC&pg=PA40 }}</ref> known as "blocked-up shadows" (or sometimes "crushed shadows", "crushed blacks", or "clipped blacks", especially in video).<ref>{{cite book | title = Illustrated Dictionary of Photography | author = Barbara A. Lynch-Johnt | author2 = Michelle Perkins | name-list-style = amp | publisher = Amherst Media | date = 2008 | isbn = 978-1-58428-222-8 | page = [https://archive.org/details/Illustrated_Dictionary_of_Photography_2008/page/n15 15] | url = https://archive.org/details/Illustrated_Dictionary_of_Photography_2008 | quote = blocked-up shadows crushed. }}</ref><ref>{{cite book | title = Color Correction for Digital Video | author = Steve Hullfish | author2 = Jaime Fowler | name-list-style = amp | publisher = Focal Press | date = 2005 | isbn = 978-1-57820-201-0 | pages = 135–136 | url = https://books.google.com/books?id=s3rQjdG2pBUC&q=crushed+shadows+blocked-up+blacks&pg=PA135}}</ref><ref>{{cite book | title = Lighting for Digital Video & Television | author = John Jackman | publisher = Focal Press | date = 2004 | isbn = 978-1-57820-251-5 | page = 60 | url = https://books.google.com/books?id=u1C4aZmMeTUC&q=crushed-blacks+highlights&pg=PA60}}</ref> As the adjacent image shows, these terms are technical ones rather than artistic judgments; an overexposed or underexposed image may be "correct" in the sense that it provides the effect that the photographer intended. [[Exposure_compensation|Intentionally over- or underexposing]] (relative to a standard or the camera's automatic exposure) is casually referred to as "[[exposing to the right]]" or "exposing to the left" respectively, as these shift the histogram of the image to the right or left.