| US 7,499,227 B2 | ||
| Lens apparatus and image-pickup apparatus | ||
| Ryuji Nurishi, Utsunomiya (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Feb. 27, 2008, as Appl. No. 12/38,390. | ||
| Application 12/038390 is a continuation of application No. 11/690352, filed on Mar. 23, 2007, granted, now 7,362,512. | ||
| Claims priority of application No. 2006-094122 (JP), filed on Mar. 30, 2006. | ||
| Prior Publication US 2008/0137215 A1, Jun. 12, 2008 | ||
| Int. Cl. G02B 15/14 (2006.01); G02B 7/26 (2006.01) | ||
| U.S. Cl. 359—698 [359/697; 396/301] | 6 Claims |
| 1. A lens apparatus, comprising
a focus lens unit,
an adjustable aperture stop,
wherein the lens apparatus includes a first focusing mode in which the focus lens unit moves based on an output from a focus-condition
detector which detects a focus condition and a second focusing mode in which the focus lens unit moves by a manual operation,
and
wherein the first focusing mode is prohibited and the second focusing mode is executed if an F-number of the adjustable aperture
stop exceeds a predetermined value.
|