Didn't know exactly what it did, so ye, gave meself a few minutes to play around with it.
So basically if you know what the 'regular' smudge tool does, enabling the 'Finger painting' option adds one functionality. In addition to smudging the content of the layer it will also paint with your foreground colour and transfer this along the regular smudge. As I tried this with a pure white on a big blue dot and it didn't came out as the pure white, I think it'll start at the rough opacity equal to the strength you have set for the smudge tool.
My guess would be you had your foreground colour set to black that resulted in the dark spots on your smudging.
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Bart J.A.H. de Brouwer |
