Editing Multi-exposure HDR capture (section)

=== Capturing multiple images (exposure bracketing) ===
[[File:Einfluss der Zeit auf die Belichtung.jpg|thumb|right|Exposure bracketing by varying the [[shutter speed]] from {{frac|500}} to 30 seconds]]
{{Main|Bracketing#Exposure bracketing}}
Any camera that allows manual exposure control can perform multi-exposure HDR image capture, although one equipped with [[Autobracketing|automatic exposure bracketing (AEB)]] facilitates the process. Some cameras have an AEB feature that spans a far greater dynamic range than others, from ±0.6 in simpler cameras to ±18&nbsp;EV in top professional cameras, {{as of|lc=y|2020|post=.}}<ref>{{cite web |title=Auto Exposure Bracketing Settings by Camera Model |url= http://hdr-photography.com/aeb.html |work=HDR Photography Resources |date=February 28, 2016<!--Last-updated date, bottom of page.--> |access-date=June 12, 2020}}</ref>

The exposure value (EV) refers to the amount of light applied to the light-sensitive detector, whether film or digital sensor such as a [[Charge-coupled device|CCD]]. An increase or decrease of one stop is defined as a doubling or halving of the amount of light captured. Revealing detail in the darkest of shadows requires an increased EV, while preserving detail in very bright situations requires very low EVs.

EV is controlled using one of two photographic controls: varying either the size of the [[aperture]] or the exposure time. A set of images with multiple EVs intended for HDR processing should be captured only by altering the exposure time; altering the aperture size also would affect the [[depth of field]] and so the resultant multiple images would be quite different, preventing their final combination into a single HDR image.

Multi-exposure HDR photography generally is limited to still scenes because any movement between successive images will impede or prevent success in combining them afterward. Also, because the photographer must capture three or more images to obtain the desired [[luminance]] range, taking such a full set of images takes extra time. Photographers have developed calculation methods and techniques to partially overcome these problems, but the use of a sturdy tripod is advised to minimize framing differences between exposures.