It is also discussed, via a camera example, how to actively excite a system in order to improve the observability.
Going back to our wireless camera example, this subproblem would assume that the data is equally "interesting" (and hence has an unvarying utility) for the entire running time of the system.
Another reason often mentioned is prediction; in that case, models are used to see what will probably happen in the 'real' future (as opposed to the 'hypothetical' future, as was the case with the camera example); this applies, for instance, to the case of economical or weather models.
You can't afford to have frame drops from the dashboard camera, for example, because that is critical information in case of accidents".
Camera, for example, adds timelapse, allowing you to create fast-motion videos of the kind that often sweep the internet.
Just because a person knows how to pose for a camera, for example, doesn't mean the poser knows anything about building a Web business.
If officers spot a suspicious package in range of a video camera, for example, they will be able to quickly track who put it there.
You're expected to know something about photography if you use this camera; for example, there are no scene modes at all, like beach, twilight, portrait.
This arrangement is frequently used in view cameras equipped with "swings" to increase depth of field and in enlargers to rectify the convergence of parallel lines caused by tilting the camera, for example, in photographing tall buildings.
You might prefer that arrangement because your face helps to stabilize the camera, for example, or to see your composition better when it's very dark or very bright out.
