Camera having a zoom lens unit

摘要: When a variator lens is driven to effect zooming, focal length information of zoom unit, zooming direction and defocus amount are detector. Integration in CCD for focus detection regulated short time during cycle set predetermined period. A moving speed compensator controlled based on detected information. range the divided into zones basic each zone. obtained by or condition corresponds specified condition, moved at corresponding zone where exists applied till then. Focus areas automatically changed dependent situation an object forbidden be zooming. In addition, indicating mark displayed finder camera fixed unchanged irrespective actual change area.