| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a camera system which allows for checking depth of field while a neutral density (ND) filter is inserted under brightest possible visibility condition even when a camera has only an optical viewfinder.SOLUTION: An interchangeable lens having a neutral density (ND) filter, which can be inserted to or removed from a light path, is configured such that the neutral density (ND) filter, if present on the light path, is driven to retreat from the light path during depth-of-field check operation.</p> |
