Preflashing of the paper is a technique that allows one to enhance local contrast and still maintain overall contrast within the parameters of the papers properties.
Originally Posted by Ka
I have a couple of images posted in the Critique gallery. Both of those images were preflashed. I wanted to enhance local contrast within the rocks to show texture. If I had not preflashed the paper the ocean would have lost all texture. By preflashing I was able to enhance local contrast and maintain texture in the water.