Digital BW, The Print

It's very important that you delete the old linearize statement BEFORE 
you print the stepwedge for re-linearization. Otherwise you're 
linearizing against values which doesn't exist. Linearization is always 
done against an unlinearized curve.

You can do this with a scanner as well. It's a good way to practise, 
then you can do it properly next time you get access to a densitometer 
again.

Scan the printed stepwedge without adjustments and bring it into 
Photoshop. Then read the L values of each step and enter them into the 
linearization in QTR. The values should go from high to low instead of 
low to high. That's how QTR differentiates between the different types 
of readings.

--
Daniel Staver
http://daniel.staver.no