I'm a digital illustrator, and at current I have to switch between Corel Painter and Photoshop for my work flow, but for only one seemingly simple reason. Painter obviously has reproducing natural media at its heart, and as such some of the dry media functions (charcoal, pencil, pastel, etc.) work with an absolute pressure basis. No matter how many times you go over a swathe of pixels or pick up your pen, opacity/flow is determined solely by pressure.
Photoshop on the other hand functions more like wet media, with the assumption that you're picking up more paint with every lift of the pen.
Now here's the real kicker, I'm not a big fan of Painter. I'm more comfortable with Photoshop and I've found plenty of ways to get past texture and blending issues with the wonderful open ended brush tools and a couple fancy plugins, but I can't get around this. I learned art as a dry media artist, and as such my hand and brain don't compute a slight lift off the tablet with gathering more color.
So to put it simply: Is there a way to adjust Photoshop's pen pressure from pen pressure = opacity x stroke to just pen pressure = total opacity?
Because I would stop buying Painter if Photoshop had this option.
Thanks in advance for any input!