Quote Originally Posted by Thomas Bertilsson View Post
But my experience with Pyrocat-MC, which uses a different developing agent, I think, was definitely in highlight control. You can prevent highlights from blocking up with replenished Xtol if you want. You just have to be careful to not develop too long. But with Pyrocat, you get more separation in the highlights, better contrast, in a negative of the same overall contrast. That's the key. Both developers can develop negatives of identical contrast index. But within the tone scale from the bottom of the shadow details to the top of the highlights, pyro has better local contrast in the highlight spectrum. You may like this, or you may not. This is especially advantageous to you if you photograph scenes of high to extreme contrast and brightness range.
Thank you. That is what I remember Per saying.

But I cannot get any fully scientifically tested [with proper controls] results stating that staining is either good or bad. Most threads that try to thrash that out get into flame wars and I stop reading them.