Re: relative colorimetric without black point compensation
Re: relative colorimetric without black point compensation
- Subject: Re: relative colorimetric without black point compensation
- From: Graeme Gill <email@hidden>
- Date: Sun, 25 Jan 2009 14:18:29 +1100
Marco Ugolini wrote:
I have not encountered any instances in which it made sense, esthetically or
otherwise, to blunt the dynamic range of the converted image by generating
blacks and shadows that look too light, as they *may* appear without BPC.
Also, if the darkest detail in the source image is colorimetrically deeper
than the black point in the destination (as is most often the case with RGB
images that are converted to CMYK output spaces), shadows will get clipped
without the use of BPC, whereas BPC scales and maintains visible detail.
Right, but the way I would interpret this is that what you really want to
do is use a perceptual mapping, but typically the perceptual intent
table has not actually been created to perceptually map from your
chosen source to destination space (this being a fundamental problem with
the ICC idea of creating a perceptual mapping knowing only the destination
space), so you resort to the closest thing you have to a "smart"
perceptual mapping, relative colorimetric + BPC.
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden