Quote Originally Posted by markbarendt View Post
Actually no. Moving the curves up would make a very different prints.

The "over" curve could never print the same highlights as the other three could, that detail is simply lost somewhere above the shoulder, just as surely as if it were an underexposure at the other end of the curve.

The "extra" curve, on the other hand, would print different subject matter in each print zone if it were moved up, it would not produce the print we originally visualized/planned.

The "box" and "extra" curves though can both produce good prints with all the zones falling as planned producing nearly identical prints.
I'll grant that if you place Zone VIII over the shoulder by overexposing, it will not be recoverable detail.

I am just used to film that gives me Zone XII without shouldering. So my view of where the shoulder is at is skewed, making me comfortable with overexposure. Your diagram should stay simple. Like I said, I like it.