Now a days, almost every DSLR camera comes with many focal points 9, 11, 22 etc. Many of them provide us with settings to chose manual focus point while shooting images, apart from the auto-selection of focus point based on the in-device calculations. What I want to ask here is, can we select multiple focus points while shooting something, say portrait? That said, in the current scenario while I have control over a single point (which we, or the camera can stress upon) and having a shallow DOF, if I focus on the nose, the eyes get blurred slightly. Of course, I can always increase the DOF, but here I don't want to. I want to select multiple focus points. This sounds a little kinda against the rule of optics though.
PS: I have a canon EOS 550D.