QTR-Quadtone RIP

Hi Fabio,

Sorry to deliver the bad news but that still doesn't look like the right
result. QTR should linearize to a straight line. There should not be that
curve at the bottom once you apply the profile.

Can you share the xxxxxx-out.txt file that QTR generates when you produce a
Create ICC profile. That file shows a rough visualization of L* which should
be a straight line.

This profile printing complexity that was introduced with CS4/5 is a real
pain in the ass for getting profiling right.

Cheers,

Mike



On 22 July 2011 18:41, pili <fabio@...> wrote:

> **
>
>
> I have tracked down the problem to some incompatibility during printing.
> For same reason, either in Photoshop CS5 or in Lightroom, the ICC profile
> generated by QTR-Create-ICC-RGB doesn't do any color transformation if
> applied during printing.
>
> I was able to circumvent this issue by doing a profile transformation in
> Photoshop: Open image, convert to QTR ICC profile, assign working space
> profile (gray gamma 2.2) and print without color management.
>
> To print without color management from Photoshop CS5, do a null
> transformation. On the print window, select Photoshop manages color, same
> profile of the file (gray gamma 2.2), relative colorimetric, black point
> compensation off.
>
> Here is my before and after calibration comparison:
> http://i.imgur.com/SJobQ.png
>
> Hope this information is useful for someone that stumbles on this same
> situation.
>
> Fabio Pili
>
>  
>


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