Comparison of Base Negatives and Pt/Pd prints
for Base Curve Calibration Options for the Stack Method
    
  Base Negative after Base Curves applied Pt/Pd Print of Base Negative
Base Curve Calibration
Option A:
(calibration referenced
to Photoshop gradient)		 Base with Base Curve Option A applied Print of Base with Base Curve Option A applied
Base Curve Calibration
Option B:
(calibration referenced
to original negative)		 Base with Base Curve Option B applied Print of Base with Base Curve Option B applied
Base Curve Calibration
Option C:
(calibration referenced
to a 21-step)		 Base with Base Curve Option C applied Print of Base with Base Curve Option C applied
 
Stack Method of Building a Digital Negative
~~~~~~~~ Excerpt from the Guide to Platinum Palladium Photographic Printmaking by Jeffrey D. Mathias ~~~~~~~~
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