For example, with dof the foreground will be blurred and the background will be clear. If you are installing ReShade 3.1.1+ from scratch without any old settings carrying over you will likely find none of these depth-based effects look as you expect. The depth buffer is responsible for all the depth-based effects you might use, like dof, adaptive fog, mxao, etc. Versions of ReShade from 3.1.1 onwards have reversed the depth buffer by default.
