A camera for optically capturing a screen, wherein the screen has an area
and wherein a predetermined overall resolution is provided for the
optical capture, comprises a camera support with an array of camera
mounts, an array of optical individual cameras as well as an image
processing device for processing digital individual images of the array
of optical individual cameras to generate the optical capture of the
screen with the predetermined overall resolution. The image processing
device is effective to reduce a correction of the individual images with
regard to alignment inaccuracies and/or parameter variations, wherein for
correction purposes a correction resolution is used, which is higher than
the overall resolution, and wherein for every individual camera an
individual correction rule is used for the correction. After the
correction has been performed, the corrected overall image is brought to
the predetermined overall resolution by combining adjacent pixels.
Thereby, with inexpensive individual cameras, an image of a large-format
screen is obtained efficiently, inexpensively and with little artifacts.