A tilt-sensitive viewfinder indicates the area of an object plane within
view of the camera using a visible signal projected from the camera. A
direction sensor determines the camera orientation and modifies the
visible signal as the camera orientation changes. Changes in appearance
of the visible signal reflect changes in the camera field of view. Data
from the direction sensor describing camera orientation may be stored in
a data storage device and may be associated with data describing the
captured image. The stored camera orientation data improves processing of
captured images by providing information about angular components of the
captured images.