Editing Multi-exposure HDR capture (section)

=== Tone mapping ===
{{Main article|Tone mapping}}

Tone mapping reduces the dynamic range, or contrast ratio, of an entire image while retaining localized contrast. Although it is a distinct operation, tone mapping is often applied to HDR files by the same software package.

Tone mapping is often needed because the dynamic range that can be displayed is often lower than the dynamic range of the captured or processed image.<ref name=":2">{{cite book|last=Darmont|first=Arnaud|url=http://spie.org/x648.html?product_id=903927|title=High Dynamic Range Imaging: Sensors and Architectures|date=2012|publisher=SPIE press|isbn=978-0-81948-830-5|edition=First}}</ref> [[High-dynamic-range video|HDR displays]] can display image at a higher dynamic range than [[Standard-dynamic-range video|SDR displays]], reducing the need for tone mapping.