| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lens device capable of accurately displaying a depth of field with high visibility without depending on photographic conditions.SOLUTION: A lens device includes: a photographic optical system having a focus lens; position detection means for detecting the position of a focus lens; subject distance calculation means for calculating a subject distance on the basis of a signal from the position detection means; depth-of-field calculation means for calculating a depth of field on the basis of photographic conditions and the signal from the subject distance calculation means; display means for displaying information on the subject distance; and display control means for changing the display of the information on the subject distance to be displayed by the display means on the basis of signals from the position detection means, the subject distance calculation means and the depth-of-field calculation means.</p> |
