| 摘要 |
Provided are: an imaging device provided with an APD filter, wherein setting of imaging exposure and detection of focusing position can both be performed with good precision; 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 for moving a focus lens (15) during autofocusing is determined using a pre-correction aperture value (F value). 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. |
