Quote Originally Posted by MattKing View Post

You should consider sending a pm directly to Photo Engineer.

Any chance that your problem is with your densitometer?
I will definitely do that very politely. I always figure poor PE must be so busy getting pestered by all of us.

There is definitely a chance there is user error in using the densitometer. I followed the instructions for calibrating it and I am using a fresh transmission calibration standard from X-Rite. The measurements seem pretty repeatable and of course I am using the same densitometer to measure both the reference strip and test strip. The other thing I thought about is that perhaps I fundamentally misunderstand the math required in doing the calculations.