QTR-Quadtone RIP

Keith,

Ok, so if I have the concept correct, there will be 21 pairs separated by a semi-colong, one pair for each step.  I’m usually reading numbers from 0-256.  For these, am I reading input and output grayscale percentages 0-100?  Are they in pairs in the order input;output?  The output is read from scanning the print of the 21 step chart; and I assume I use the standard percentages of a 21 step chart for the input value?

I actually tried to find this information on the quadtonerip site but I think the site is down, it’s not loading in Safari or Chrome.  Yes, I’m on a Mac too.

David Aimone
david@...

http://www.aimonephoto.com


> On Nov 21, 2016, at 8:36 PM, Keith Schreiber keith@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
> 
> Hi David,
> 
> 
> Aha! That was not clear. Or maybe I just missed it.
> 
> In the profile that I posted, or better yet in the text file that you made with it, find the following line:
> 
> GRAY_CURVE="0;0 100;100"
> 
> You are going to replace the part within the quotation marks with your curve. Just be sure to use the same syntax. It begins and ends with quotes. The number pairs are input;output separated by a space. It's a semi-colon NOT a colon. This is important. Then change the CURVE_NAME to reflect that this is a new curve, and save the file using the curve name as the file name. Run the install command to install the new curve, print another 21-step using it, print the new neg in the darkroom, read the steps to verify your linearization. 
> 
> This is all assuming you are on a Mac. It's a little different for PC users using the Curve Creator tool, but not much.
> 
> Cheers,
> Keith
> 
> Keith Schreiber
> jkschreiber.com <http://jkschreiber.com/>
>