So I have the Tokina 11-16/2.8. Suggestions for taking advantage of the 2.8 aperture? I find myself trying to maximize the DoF. For most landscape shots I'm shooting at 8+. With indoor shots I also have a DoF problem, with areas seemingly looking oof, when its just the bokeh kicking in. So I rarely use 2.8 indoors as well..maybe I'm approaching it the wrong way?