Photoshop brush settings: colour dynamics not working as I expect

[rileys79139388]

Hello,

I have been using colour dynamics (pen pressure) for a while and slowly I have seen that the brightness jitter (and maybe the other jitter scales) has become more extreme despite no change in settings. I have set every jitter to 0% but I still see extreme variation. 

 

In the above photo, the left stroke is the colour I see when I do a light stroke, and the right stroke is heavy.

The problem this poses for me is that the start and end of strokes are often very white as I place and lift the pen. Is this how its suppose to work? Is it a problem with the pen? Any way to fix to more finely customise the colour range?

Thanks in advance for any adivce.

[Trevor.Dennis]

The Jitter setting and brush mode are two different things.  With Jitter set to zero and mode set to Pen Pressure you'll get what yopu are seeing.  Try turning Mode to Off and Jitter to 100%.  With Apply per tip checked, every stamp of the brush will be different.  You could change how that will look by adjusting Spacing.

[rileys79139388]

Thank you for your response Trevor. I understand everything you describe. 

I am using a pen currently and want pen pressure turned on, as I want the colour to be effected by pen pressure. My issue was specifically that the effect of lightly using the pen is sometimes unexpectedly extreme. This could be a bug, because even with jitter at 0% on all settings, the pen pressure somehow still has a huge effect, which seems abnormal to me, as you would expect no change if jitter was set to 0%.

So, in simple terms, the range of colour seen when I use pen pressure is abnormal, and I don't know why. When I have tested the extreme case of 0% jitter on all settings, I still get the extreme range.

[Trevor.Dennis]

Hmmm...  I am seeing the same thing.  Pen Pressure is doing nothing but act as an on/off switch — the degree of pressure makes no difference.  I can't get the full range of foreground/background with the pen either, but can using the mouse.  OK, that changes with how the Purity slider is set.  But basically, I can't get pen pessure to do anything.