Editing Multi-exposure HDR capture (section)

=== Merging the images into an HDR image ===
[[File:Dynamic Range Increase.jpg|thumb|Highlight areas from the window (upper right) are extracted from an underexposed image (upper left) and composited with a scene-averaged exposure (bottom left) to produce a HDR image (bottom right).]]
{{See also|Exposure fusion}}
Tonal information and details from shadow areas can be recovered from images that are deliberately overexposed (i.e., with positive EV compared to the correct scene exposure), while similar tonal information from highlight areas can be recovered from images that are deliberately underexposed (negative EV). The process of selecting and extracting shadow and highlight information from these over/underexposed images and then combining them with image(s) that are exposed correctly for the overall scene is known as [[exposure fusion]]. Exposure fusion can be performed manually, relying on the HDR operator's judgment, experience, and training, but usually, fusion is performed automatically by software.