Re: Color of a rose...
Re: Color of a rose...
- Subject: Re: Color of a rose...
- From: Sean <email@hidden>
- Date: Wed, 3 Jun 2009 20:51:52 -0400 (EDT)
>I should also have added to my previous post that color space
>conversions can also cause or add to the problem, so can some of the
>automatic "image improvements" that are performed on the image by the
>camera and the image processing software.
Thanks Robin, your previous post gives me some ideas I can sink my teeth into. I'm assuming that colorspace conversion will definitely do damage. And to be clear I've approached this essentially in two ways neither of which involves anything "automatic" (or for that matter all that precise), and both result in very similar renditions of red.
1) D3 RAW capture single exposure with colorchecker in frame. => match colorchecker patch #15 (red) to known RGB values from within ACR. Open into photoshop using ProPhotoRGB in 16 bits.
and
2) D3 RAW capture bracketed exposures (without colorchecker) => open in either photoshop's merge to HDR or Photomatix. => tonemap to 16bits ProPhoto.
Once in photoshop I've tweaked (by eye) just to see if I can get a red that even if it doesn't match, it at least approaches what I'm seeing in the real deal. I don't expect or even need a perfect match. For instance I've never looked at any skin tones I've shot and thought - "this is just way off." On the other hand digital sensors appear to me to have a sensitivity to reds in skin that often requires "fixing" to get the skin tones I expect, particularly where skin blemishes are concerned.
Next up: 1) trying to find a reasonable pantone match 2) get a reading on a petal with my i1
I'll keep you posted.
Thanks for all your wisdom on this matter.
Regards,
Sean
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