1. To be seen clearly, as via adjustments to instruments that use lenses, or by digital or other means on a screen. No, that's not right—the vase of flowers still hasn't come into focus. The eye doctor adjusted his machine so that the eye chart would come into focus for me. If the footage never comes into focus, we won't get a good look at the perpetrator's face after all.

2. To be better or more clearly understood or seen in a new perspective. The importance of conservation efforts has really come into focus for a lot of the students, thanks to the Chelsea's passionate speech about the environment.