QTR won't create curve
2006-02-26 by nemoniemann
I've been trying to profile the new Hahnemuhle Museum Etching paper. (Seems really good with very black blacks). However, QTR won't allow me to linearize my 21-step wedge. I've been following the procedures I've been using successfully: I use iShare to give me luminance readings from each patch and enter those numbers -- i.e. - 100% white = 97.5, 50%=42.1, 100% black = 15.8. My problem is that after entering these luminance numbers, I try to create a curve and get the error message: "Invalid linearization curve -- not constantly increasing. Curve Creation failed". I'm not doing anything different from teh curves I've created for, say Entrada Bright White. (Obviously, the numbers are different.) Any suggestions as to what might be going on? Roy? Thanks, Nemo