4d spaces - was RE: Monaco 4.0 editor
4d spaces - was RE: Monaco 4.0 editor
- Subject: 4d spaces - was RE: Monaco 4.0 editor
- From: "Darrian Young" <email@hidden>
- Date: Wed, 12 Jun 2002 11:46:11 +0200
Darrian Young wrote:
>
While I agree that it is dangerous and many times futile to try and
>
endlessely tweak a 3d color space to get the particular colors you are
>
looking at right (please read "many times", not "always") because at the
>
same you are pushing around other colors, this cannot be extrapolated to a
>
4d space as well. This is the great thing about a 4d space. You can
adjust
>
only some colors (such as greys, for example) without affecting others.
Now
>
where should that darn adjustment go in - CMY, CMYK, or K???
Graeme Gill wrote:
>
I don't follow you. There will be the same interaction, irrespective
>
of the dimensionality of the space (in fact there is likely
>
to be more since 4d luts are generally lower resolution than
>
3d luts), there are just more ways of a color being specified
>
as an input, multiplying the number of colors to adjust by a whole
>
dimension. Typically a high res. lut would have a 3d grid resolution
>
of 33, meaning it has about 36000 output colors that could
>
be adjusted. A high res. 4d lut will typically have a grid
>
resolution of 17, meaning it has about 84000 output colors that
>
could be adjusted, a task that is clearly at least over twice as great.
I think you just answered you own question. Having many more possibilities
of where to do the edit gives much more control over what you are editing.
So given your argument above, for the sake of simplicity, let's create an
example. You have a got gain curve with three points on it. According to
what I understand from above, this is much easier to control, or is much
less a task than a curve with with say twelve points on it. I would argue
the opposite. I prefer take the time to find which of the twelve points I
want to move and then move one or two of them with less effect on the rest
of the curve, than take the "less time consuming task" of the curve with
three points and move one of them only to find that everything else is
moving around as well.
If it were necessary to move the entire curve (cast correction, for
instance), then this would be one case where it would be more
time-comsuming, because you would have to move all twelve points, but then I
work with GMG ProfileEditor which has a tool specifically for this called
"color value correction" which produces a complete color shift in the
direction which one desires.
Regards.
Darrian Young
MGV
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.