| 摘要 |
<p>PURPOSE:To accurately detect the image blur by arranging an area sensor, which detects the light quantity distribution of object light reaching a film surface, in a position more distant from the film surface than the other detectors. CONSTITUTION:At the time of exposure, the luminous flux passing a lens group 7 forms the image of an object on a film 5. An image blur detecting optical system 9 forms the object image, which is formed on the film 5, on the light reception face of an image blur detecting sensor 8 again. An image blur arithmetic unit 10 detects the extent of blur of the image based on the change of the output of the sensor 8. The sensor 8 is arranged in the position most distant from the surface of the film 5, and the magnification of the image formed on the sensor 8 is not different among respective parts of the image and is uniform to accurately detect the image blur.</p> |
