Well the point of controlled tests by contacting calibrated wedges is to eliminate the variables, which enables one to answer questions like this.
Clive, in your analogy see the bricks as units of light. In your "pre-flash" example you are adding 10 units of light to all the tones in your final print before the image exposure. In your "post flash" example you are adding 10 units of light to all tones in your final print after the image exposure. The variance of height is due to the image exposure.
Last edited by Michael R 1974; 10-17-2013 at 07:31 PM. Click to view previous post history.