On the dynamic range of RAW...

Started Nov 30, 2004 | Discussions thread
OP Brian G. Veteran Member • Posts: 6,531
I'll give it a shot...

Hi Eric,

I had only dealt with this shot in B&W, but since it is RAW, I will redo it in color. I probably will not have a chance to do so until sometime over the weekend...but I'll post it as soon as I can. One thing that I think will definitely be problematic is the increase in visible chrominance noise that it likely to result from pushing a high-ISO image +4Evs. But it will be interesting to see how good or bad it turns out.

Kind Regards,
Brian

Eric_17 wrote:

I didn't read the whole thread here, but I don't see any mention of
anyone exploring the effects of this process with color.

Increasing the dynamic range (decreasing contrast) inherently
desaturates color and adds more grey to an image. (And by the same
principle, decreasing dynamic range (increasing contrast)
inherently increases color saturation.) It seems to me that
Brian's results are falsely spectacular (don't get me wrong, + -4
EV really is impressive), but if he had tried this with a color
image, the results would not have been the magazine-worthiness the
black & white one is.

Brian, could you repeat your example with the original color
versions? Is this undesirable side-effect simply surmountable by
increasing saturation with Photoshop's Hue/Saturation dialog?
Sorry, my camera doesn't have RAW so I can't play myself.

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