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Digital BW, The Print

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Re: [Digital BW] Emedding Photoshop Curves in ICCs

2007-01-14 by Tom Husband

Thanks Steve.  I'm understanding some of this but most is over my head.
I'll have to dig into this more.

On 1/13/07, Steve Kale <stevekale@btinternet.com> wrote:
>
> Saving a curve as an ICC is easy.  Go to Edit-> Color Settings-> Spot ->
> Custom Dot Gain and then create the curve you want then OK.  Click on
> Custom
> Dot Gain again and Save Spot.  This of course creates an ICC profile but
> doesn�t help you with identifying the coordinates of the appropriate
> transfer curve.  I prefer to use QTR Create ICC. I print a step wedge with
> my preferred Epson Adv B&W settings and then create an ICC profile from
> that
> with QTR Create ICC.


Now I create ICC profiles using QTR Create ICC-RGB and an ABW created step
wedge and then print through Qimage.

  A transfer curve that accounts for the vagaries of the
> output, white point compensation (media relativity) and black point
> compensation is calculated and embedded in an ICC profile.


I don't understand this bit.   A transfer curve that accounts for the
vagaries of what?  The ICC profile you just created?  Then do you create
another ICC profile using the numbers from the first one and the transfer
curve?

  In addition,
> full colour information from my spectro readings is recorded in the ICC
> tag
> used for soft proofing.  Not only do I get good and easy luminance
> management at printing but I get full colour soft proofing.  Quite cool.


I don't have a spectro but do have a densitometer.  Am I still OK?

Thanks again,

Tom


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