Focusing image verifying device

摘要

An autofocus system is provided that includes a focus-verification image-recapturing processor and a focus-verification image display processor. The focus-verification image-recapturing processor sets ISO sensitivity to a value lower than a predetermined value and increases an exposure value by adjusting at least one of an aperture value and an exposure time to carry out a focus-verification image-recapturing operation under focusing conditions applied in an antecedent autofocus operation when ISO sensitivity that is set in said auto focus operation exceeds the predetermined value. The focus-verification image display processor displays a focus-verification image obtained by the focus-verification image-recapturing operation when the ISO sensitivity that is set in the auto focus operation exceeds the predetermined value.

主权项

1. An autofocus system, comprising:
a focus-verification image-recapturing processor that sets an ISO sensitivity to a value lower than a predetermined value and increases an exposure value by adjusting at least one of an aperture value and an exposure time to carry out a focus-verification still image-recapturing operation when, under the same focusing conditions, the ISO sensitivity set in an antecedent autofocus operation is higher than said predetermined value; and a focus-verification image display processor that displays a focus-verification still image obtained by said focus-verification image-recapturing operation when said ISO sensitivity set in said antecedent autofocus operation is higher than said predetermined value, and displays a focusing verification image captured in said antecedent autofocus operation for focus verification when said ISO sensitivity during said antecedent autofocus operation is less than said predetermined value.