Ya the Graphire 2 that I mentioned earlier can definitly support it. In photoshop for the brush tool you have 3 options for the pressure:
1)Thickness of the line. The harder you push, the thicker the line
2)Opacity. 0% pressure = transparent, 100% pressure = opaque
3)Color fade. Light pressure = color 1, Hard pressure = color 2, and it fades nicely between them.
The Graphire2 has 512 levels of pressure, and I probably wouldn’t notice a difference in the pressure gradiant if I had 1024. I mean look at it mathematically…
In a 24 bit system, 8 bits are reserved for each color channel (R,G,B). This offers 256 possible values. That’s 1/2 of the Graphire 2’s pressure sensitivity! If you took the color fade option then you could go from 1 color (with a maximum of 256 levels) and went to another color, you’d have a range of 512- which matches exactly with the tablet! Did any of that make any sence?
I really see the only advantage for the 1024 levels of pressure would be in Pen-supporting 3D packages like Maya. The pen is good for use with the artisan tools where you “paint” on the surface of an object to deform it. Obviously dealing with decimals in 3D space is more sensitive to accuracy thand dealing with whole numbers in RGB values.