Canon has detailed in camera HDR (high dynamic range) in a recently published patent application.
Canon's proposed method would alter exposure values at the individual pixel level, which should effectively emulate what's now possible but stitching together multiple photographs taken at different exposure settings -- and, for that matter, even open up some new possibilities since those single-pixel exposure values could be tweaked at will. Mapping out the exposure level by the pixel is far more detailed and if done correctly, has huge implications.
1 comment:
Lisa:
ProHDR is one of two iPhone HDR apps but performs in-camera HDR at full 3GS resolution of 2048x1536. It does stitch photos together pretty well, but I used a "tripod" system whereby a window-mount GPS holder is used. With a regular tripod I hold the GPS unit (with the suction cup down) on the top of the tripod while the iPhone is clamped in the adjustable end. The iPhone can then be adjusted and then held steady for the shot. The result is a sharper shot.
In addition, it is best to touch the very lightest area in the photo and then touch the very darkest. With only two shots taken to form the final image this affords the most latitude. For shots with little contrast it can be tough to do this in low light, but is possible...Dave
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