As far as I know the size function of the curve brushes changes only the depht and the height but not the lenght of the insert mesh. Or is there any setting I have overlooked? I like the new curve brushes and its a pity that it is useless for things like reptile crests or tentacle suckers because of the stretching.
Stroke > Cure Modifiers > Intensity and Size will both effect this. Try turning them both off to maintain length and width.
What I want is a proportional scaling of the crests. Can you show me an example how you get this
with the Intensity and Size settings?
Ah, I see what you are asking. I do not think that is currently possible with curves in zbrush. =/