[admin]

Not a stupid question! The brush is a 'smart' brush which aims to speed up selecting skin. You can see when you use the brush, it is made up of two circles. The inner circle is the detector, this area is used to select colors you want to select. The outer area is where the selection goes up to, so to use it you just have to make sure the inner, smaller, circle remains on skin, and any skin in the outer circle will be selected. This means you can brush areas quite quickly and let the brush be accurate for you. The detector size is how big the detector is. A smaller detector is for when a larger detector would go over areas of non skin for instance very small patches of skin.

Top Tip: Hold down the ALT key and you can move the brush separately from the detector. This is great when selecting skin that is mainly obscured by something like hair for example (i.e. there isn't a large enough bit of skin to put the detector on).

Tony