Hi Sam
it's kind of impossible to not re-open the profiling debate since it
probably helps explain what you're seeing here.
The Iris iProofers I've seen have been set up with a <device link>
profile and drop folder workflow set up to simulate a press condition
somewhat lesser than Euroscale. Yes, your original conversion is to
Euroscale coated and that's what the device link conversion apparently
expects, but you'll perhaps have noticed that what comes out of the
printer [if you use it the way I've seen them set up] is somewhat lower
gamut than the screen image?
In that scenario it's pretty difficult to use Photoshop's tools to
tweak the colours to destination gamut, using gamut warning etc. this
is because Euroscale Ctd. is actually not the destination colourspace.
Is that right? You can see colours onthe screen you can't see on the
prints? [ignoring, of course, the usual differences of luminance
typical of a screen and print <match>.
The iProof set up as above apparently provides a print which resembles
press output and Cromalins [have you found that?] but ti's not ideal
for pritning portfolio prints. A Canon inkjet like that has a quite
large gamut, but not when it's used the device link way.
It can work right for you, but I'm afraid it's a profiling issue. [and
how the profiles are used].
[listmom, IMHO this is an interesting question, to save reiterating the
points Sam made I wanted to leave the original post in it's entirity,
don't worry though, I'm flinching now in anticiaption of the clipping
mail].
On 14/1/03 at , Sam Moxon wrote:
> Hi fellow listees,
>
> Can anyone offer any pointers to improve the saturation of a few
> images that I am printing in CMYK for my book. I'm not wishing to
> open the profiling debate again as I am fully aware of the benefits
> of this as I am sure are most of the list, however, although my
> knowledge of CMYK is improving on a day by day basis there are always
> certain prints that I produce that leave me scratching my head for an
> answer. In this case high colour saturation in blues that I am unable
> to get anywhere near in print, that is both in a sky and in clothes.
> We are producing Euroscale V2 conversions in PS6 having sometime ago
> gone down the route of adding the Binuscan CeMagYK separations
> package to our Sinar Captureshop software (hence the profiling
> comment).
but if it doesn't work to your satisfaction?
> Unfortunately the conversations in CeMagYK have prooved somewhat
> disapointing and so we have on a whole reverted to PS6 conversions
that's disapppointing isn't it. the Binuscan SW must have something
going for it? It's expensive isn't it?
> which print well on our Iris iProof printer but not in this case.
> So any knowledge on improving or tweeking the conversions to improve
> colour saturation that anyone is prepared to share would be welcome.
tweaking RGB destined for CMYK is pretty straightforward if somewhat
time consuming, but without a profile that really represents the
destination [is with a good screen preview] you can use up a lot of
paper and enthusiasm.
Hey, Maybe I'm barking up the wrong tree? How is the iProof match to the
profiled screen?
Regards
NeilB
- - - - Consulting in Imaging & Colour Management - - - -
custom scanner and printer profiles, training on Trident & Imacon Scanning
- - - - - we supply Gretag and eyeOne, also XRite & OptiCal - - - - - -
p:44 (0)1273 774704 m:44 (0)7778 160201 http://www.neilbarstow.co.uk/
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