Forum:Way to bind "DOF" to be a button toggleable?

When you have DOF (Depth of Field) on you get nice postprocessing and glowing effects, but when you are crippled you get a very high blur and your screen darkens gradually, making it nearly impossible to Second Wind on high distance.

So my question is: Is it possible to bind "Toggle Depth of Field" to a button, so i can switch it on/off at will?