One quantity which improves with each new digital SLR CCD - the digital photo sensor - is the dynamic range. This is the capability to record the lightest and darkest areas of a high contrast scene. It's a common reason why shots don't come out how the eye sees the scene.
I expect it won't be long before top end full sized sensor slrs can achieve high enough dynamic range to make hdr techniques unnecessary. In the meantime cameras offer built-in hdr but this hdr is limited to still scenes if hdr is done using 3 sequential shots at standard exposure, under and overexposed.
I was think initially that a special ccd would be need which had three pixels for every effective pixel so all 3 shots needed for the hdr process can be shot in the same instant but it is unnecessary. It can be done with a standard ccd for whatever camera and an option to turn it into an hdr ccd using simple hardware/software tweaks.
The limitations are the low resolution and potential high processing demands (I wonder if these could be overcome by having dedicated hdr hardware). The processing problem would reduce image recall and continuous shooting performance. That is, of course, if it is done incamera rather than once the images are downloaded to a computer.
Sent from my smartphone
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