Re: Scanner Input profile workflow advice
Re: Scanner Input profile workflow advice
- Subject: Re: Scanner Input profile workflow advice
- From: neilB <email@hidden>
- Date: Mon, 27 Aug 2001 18:05:02 +0000
Hi Roger
On 26/8/01 at 8:40 pm, email@hidden (Roger Breton) wrote:
>
Dear Tim,
<lots of snips throughout>
>
I would Assign your scanner profile on open in Photoshop and convert to
>
AdobeRGB for further editing. Although, I have found that Joe Holmes's
>
Ektaspace does not clip any of the original XYZ data as opposed to AdobeRGB
>
which slightly clips in the green. Whatever profile you select as your "RGB
>
Working Space" in Photoshop, you definitely need to tag the image with it
>
upon saving.
Since we discussed the fact that input to workingspace profiles
are always relative I'd be afraid of a clipping space since in
relative clipped data is mapped indiscriminately to the boundary
of the destination space. I've had a lot of trouble with very
saturated colours and detail therein when using too small a
workingspace. Even with Ekta Space I sometimes have to [drum] scan
at a low rez. and go back and forth a little between Photoshop
[Levels/Alt/threshold display] and the scanner app, gradually
reducing the output numbers to be certain the data fits in the
workingspace when converted. [a good reason to be in 16 bit where
possible, some fairly extensive edits can be needed to get the
apparent intensity back].
Oh for a Threshold display in my scanner software.
>
Yes, Silverfast allows you to set the conversions in scanner
>
software itself. So, you would be able to "see" or soft-proof
>
colors right into SilverFast the same way you would in
>
Photoshop by scanning raw and then Assigning on input. >
Would that be <assigning [scanner profile] on input and then
converting to the Photoshop Workingspace>
>
AGFA Foto-Look also does that and so, I find, the majority
>
of ColorSync-aware scanner driver software these days.
>
Anyone willing to share?
here it is
Softproofing via the scanner profile is such a useful feature -
since it enables the operator to be confident in continuity of
appearance between any colour or tonal edits he makes in the
scanner app, and the display in Photoshop once converted.
Perhaps we'd better point out here that there are disadvantages in
working in Photoshop using an input colour-space as workingspace
since they are generally non linear.
The last Silverfast I saw did not allow operator alterations to
colour and tone for 16 bit output. Shame as then it all has to be
done in Photoshop with the attendant time penalty.
neilB
Neil Barstow - Colour Management Consultancy Services
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