| 摘要 |
<p>Automatic control apparatus for a photographic camera is responsive to a set of measured scene parameter inputs, representing at least subject distance and subject brightness, to produce signals representing the desired setting of one or more of the following camera control functions: aperture size, shutter time, flash output, and lens extension. The desired camera settings are determined by a mapping function defining the settings that optimize picture quality by minimizing the total reduction in picture quality due to the combined effects of blur, smear and exposure error. The mapping function is obtained by maximizing a Composite Quality Factor comprising one or more Subjective Quality Factors representing blur, smear, and exposure, evaluated at the subject distance and at a plurality of background distances.</p> |
