Paul Stamatiou was here.

mfwit:

mrgan:

Preferences > Memory Usage

Adjustments > Brightness/Contrast

Filters

Blur (note the rendering of the thumb arrow)

Layer Blending

Layer Style

Threshold

Color Balance

Things to keep in mind:

1. These can be found in just Photoshop; I can’t imagine what I’d find elsewhere in the suite. Actually, fine, here’s the first one I found in Illustrator CS5:
   
2. The most common out of all these seems to be second one, Brightness Adjustment.
3. They’re all ugly. The only near-acceptable one is the Layer Style slider.
4. None of these looks like the standard OS X slider:

consistency wha?