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[[File:A deep infrared view of the Orion Nebula from HAWK-I - Eso1625a.jpg|right|thumb|Infrared view of the [[Orion Nebula]] taken by [[ESO]]'s HAWK-I, a cryogenic wide-field imager<ref>{{cite web|title=Deepest Ever Look into Orion|url=http://www.eso.org/public/news/eso1625/|access-date=13 July 2016|url-status=live|archive-url=https://web.archive.org/web/20160713170150/http://www.eso.org/public/news/eso1625/|archive-date=13 July 2016}}</ref>]]
Special sensors are used in various applications such as [[thermography]], creation of [[multi-spectral image]]s, [[Laryngoscopy|video laryngoscopes]], [[gamma camera]]s, [[sensor
While in general, digital cameras use a flat sensor, Sony prototyped a curved sensor in 2014 to reduce/eliminate [[Petzval field curvature]] that occurs with a flat sensor. Use of a curved sensor allows a shorter and smaller diameter of the lens with reduced elements and components with greater aperture and reduced light fall-off at the edge of the photo.<ref>{{cite web |url=https://www.engadget.com/2014/07/08/sony-shows-off-first-picture-taken-with-curved-sensor/ |title=Sony's first 'curved sensor' photo may herald better images, cheaper lenses |first=Steve |last=Dent |date=8 July 2014 |access-date=July 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140711224002/http://www.engadget.com/2014/07/08/sony-shows-off-first-picture-taken-with-curved-sensor/ |archive-date=July 11, 2014 }}</ref>
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