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Staggered HDR

Staggered High Dynamic Range

An advanced image capture technology where a long exposure and short exposure are taken simultaneously, using the same camera sensor, and then combined into one image using computational HDR. This produces an HDR image faster, and with better quality when the subject is in motion.

See: Computational HDR

Not all camera sensors support staggered HDR. It is a feature that started appearing in high-end camera sensors for phones around 2021.

Staggered HDR takes advantage of a common image capture technique called rolling shutter, where the capture process starts at one edge of the sensor (such as the top) and moves to the other end (the bottom) very quickly. With staggered HDR, the short exposure can start at one part of the sensor while the long exposure is still finishing in a different part of the sensor. So the two exposures overlap in time, but not in sensor area.

Without staggered HDR, the first exposure must finish completely before the next can begin.

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