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公开(公告)号:US06453124B2
公开(公告)日:2002-09-17
申请号:US09815977
申请日:2001-03-22
IPC分类号: G03B1336
CPC分类号: H04N5/23212 , G02B7/28 , H04N5/23293
摘要: At power-on, a digital camera starts to operate with a display unit off (state S1). At a subsequent half shutter press of a shutter button, a quick return mirror is flipped down and phase difference AF is performed with live view display off (state S3). At a subsequent full press of the shutter button, the digital camera enters an image capture operation. With a quick return mirror in the up position, a focusing lens is moved to its in-focus, front focus and rear focus positions, at each of which contrast in an AF area of predetermined partial portion of an image is obtained for comparison to select a position of the focusing lens with maximum contrast (state S4). Then, image data is obtained and recorded on a memory card (state S5). With the above processing, the digital camera can perform autofocusing, as circumstances demand, by a contrast AF method.
摘要翻译: 上电时,数码相机开始关闭显示单元(状态S1)。 在随后的半快门按下快门按钮时,快速返回镜被翻转,并且实时取景显示关闭(状态S3)执行相位差AF。 随后完全按下快门按钮,数码相机进入图像捕捉操作。 在向上位置的快速返回镜中,将聚焦透镜移动到其对焦,前焦点和后焦点位置,在每个处获得图像的预定部分部分的AF区域中的对比度以进行比较以选择 具有最大对比度的聚焦透镜的位置(状态S4)。 然后,获得图像数据并将其记录在存储卡上(状态S5)。 通过上述处理,数码相机可以根据情况需要通过对比度AF方式进行自动对焦。