If you image is on a solid color background try using the apply all option with the magic brush tool. This will do 90% of the masking work in a single click. Then you can refine the mask by painting back in information that you want to save. Here is how.
Step One Open your image [...]

Remember that Mask Pro 4 works based on color. If you image has a color-cast or is lacking contrast it can effect how well Mask Pro 4 works. You can often improve your masking results simply by doing your color-correcting and tonal adjustments before you use Mask Pro 4. Here is a quick way to [...]