Photoshop brush for the degree of fuzzy ranking (from clear to fuzzy)

I used the drawing tablet, sometimes with the other brush, pen and found some difference too close to call, drawing out the effect of (referring to the fuzzy effect) of them are listed the same.

tablet is not clear what kind of drawn
is not because of the hardness of the brush paintings, like so vague it is the same?
If so, where in the shape of the nib pen
Can adjust the hardness or choose a brush that can be transferred
hope to help you:) heard all the brushes can be adjusted hardness.Quick cut key SHILFT +] or SHILFT + [, the two Yes yes adjustments paint than the hardness, hardness greater the number of strokes out of the painting and graphics around the edge of the graphic contrast to the more clear brush can be a hardness.