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Information about HDR file format

Name HDR
Full name HDR, High Dynamic Range Image File
File extension .hdr
MIME type
Developed by HDRsoft
Type of format Raster image
Description Files that Have the HDR extension are raster image files saved in a the High Dynamic Range format. This format is most commonly used for digital photos. Images saved as HDR images are used for enhancing images and photos with regard to color and brightness. Washed out areas, shadows and other dynamics can be easily fixed in HDR images.
Technical details The pixel values of a HDR file can cover the whole tonal spectrum that is present in the real world. HDR images are able to display the largest possible range of pixel values. Thus, direct light and sunshine as well as extreme shadows can be captured with a life-like portrayal of colors. HDR images can be created either by merging different photographs in a specific way, by using special image sensors, or via computer rendering.
Associated programs ACD Systems ACDSee (Windows), ACD Systems Canvas (Windows), Adobe Photoshop (Windows & Mac), File Viewer (Android), HDRSoft Photomatix (Windows & Mac), Lemkesoft GraphicConverter (Mac)
Wiki https://en.wikipedia.org/wiki/High-dynamic-range_imaging