Handheld HDRI
High Dynamic Range Imaging (HDRI) is the technique in which a series of different exposures, all of the same subject, are combined into a single, special file format that can encompass a much wider range of tones than a normal JPEG.
We deal with this more thoroughly in the next chapter, from page 158 onward, because it demands that all the image frames are in perfect register. This naturally makes it a technique for tripod shooting. However, recent improvements in automatic image alignment and in DSLR camera design now make it feasible without a tripod.
In a way it is inconvenient to split up the subject between chapters, but unavoidable given that this is a handheld possibility, albeit specialized. For now, here is a brief summary ...
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