Digital BW, The Print

In a message dated 9/30/07 1:38:24 AM, r.smallfield@... writes:


> 
> The question is, should one evaluate hue under a full spectrum light or 
> daylight, when in reality it's going to be viewed under normal household 
> illumination?
> 

Evaluation is one thing, printing materials are another. The first generation 
of Epson pigment inks   (2000p etc) were so volitile when it came to changing 
under differing light sources that it was simply a waste of time to try to 
neutralize at all. Each subsequent generation has been an improvement. Now, 12 
in systems include secondard colors as well as primaries, so you don't have to 
mix all colors from cyan, magenata, and yellow. Now reds, greens, blues tend 
to be more constantly red, green, and blue under differing lighting. So yes, 
there will always be some difference with differing light sources, but no, the 
degree of this is not fixed, it varies widely with what media you are printing 
on, and what ink type, and ink color set, you are printing with. Its getting 
progressively easier to control this over time, as the technology improves. 

But I kind of like that pink fringe on clouds... <G>

C. David Tobie
Product Technology Manager
ColorVision Business Division
DataColor Inc.
CDTobie@...
www.colorvision.com


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[Non-text portions of this message have been removed]

At 03:17 AM Monday 10/1/2007, you wrote:
>Evaluation is one thing, printing materials are another. The first generation 
>of Epson pigment inks (2000p etc) were so volitile when it came to changing 
>under differing light sources that it was simply a waste of time to try to 
>neutralize at all. Each subsequent generation has been an improvement.

I was printed on a 2100 (Entrada Bright) ... I've never had a neutral grey turn slightly mauve when printed with QTR under incandescent lighting.

I'd tried to remove some cyan from the cloud by adding a red curve. Must have overdone it. Instead I should have desaturated it.

thanks,
Richard 
--
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