QTR-Quadtone RIP

The simple answer, as I see it, is yes. You need a spectrophotometer. It is
best to spend your time making new images and printing them than fussing
with old images to reprint them correctly.

QTR "profiles" come linearized but in my opinion every printer is different
and re-linearizing a profile before running a new setup is really what you
need to do. In the long run (and for many even in the short run) it pays
off. I would not think twice about buying a new lens (if I needed it) or
re-aligning my enlarger. I would not blink an eye at buying a spectro to
linearize my printer. It's a one-time thing and will solve many many
troubles down the road.

Buying a spectro like PFP or Eye One will let you linearize any paper/bw-ink
combo you choose. But you will need to get more in-depth with QTR as a
program to build a profile from scratch for totally new papers.

I hope this answer was satisfactory.

take care,
Walker


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