| 摘要 |
Provided are: an imaging device provided with an APD filter, wherein setting of imaging exposure and detection of focusing position are both performed with good precision, and the focusing position can also be rapidly detected; an imaging device body; and a lens barrel. When the APD filter (17) is arranged on the optical path of incident light, the imaging exposure is determined using a corrected aperture value (T value) obtained by correcting an aperture value on the basis of an optical characteristic of the APD filter (17), and the imaging aperture determined in the imaging exposure determination is set. Then, rather than using the aperture value (T value) after correction, a search interval SD is determined using a pre-correction aperture value (F value) in a first range in which the aperture value is greater than a specific value EF, and the search interval SD is determined using a specific value as the aperture value in a second range in which the aperture value is equal to or less than the specific value EF. The search interval SD is determined by a value calculated by multiplying the depth of focus D by a certain value C and dividing by an image surface movement coefficient k. |
