(peter) yahvuu wrote:

> there's one thing i don't understand, may be a misconception:
> why is it necessary to have separate modes for editing the RGB data
> and the plates?

mainly because creating art on a RGB monitor, to be used on
many media, is not the same _activity_ as bringing this art to
_one_ particular printing press.

also, it is better when the art itself is separated from the  
adaptation of
it for one press run.

> For example, if i have an RGB image in the composition and want to  
> apply
> 'value curves', that has to be done in the RGB area, for after
> separation the plates are treated individually.

the question is what is the curve for? is it artistic? then RGB is your
space. getting the plates right? then chain them together and do a  

> Now only after manually pulling over the 'press projection' again i
> can discover that this operation drove my plates out of gamut.

there is going to be no substitute for experience with printing presses
and especially the particular press one is working towards.

> Is it correct that there's no 'live preview' of the effects that RGB
> manipulations have on the plates?

if that is really needed by some users (see the two activities above
and also "no substitute for experience") then a second view of the
file (View->New view) can be run with the projection pulled down.
might be hard on the processor.


         founder + principal interaction architect
             man + machine interface works

         http://mmiworks.net/blog : on interaction architecture

Gimp-developer mailing list

Reply via email to