Patent ID: 7512329

Claim:
An image pickup method for an image pickup apparatus including an optical system having an optical axis, and an operating member disposed concentrically with the optical axis of the optical system, comprising: a selection step of permitting a menu screen to be displayed on a display section and permitting a user, using the menu screen, to select one table from a plurality of user selectable tables that each provide a sampling period of a change rate in operating speed of the operating member; a detection step of detecting a change rate in operating speed of the operating member by counting pulses generated when operating the operating member and integrating the counted pulses with the sampling period provided by the selected one table; a driving speed determining step of determining a driving speed of the optical system based on the change rate in operating speed of the operating member detected in said detecting step and the selected one table; and a driving speed actuating step of actuating the optical system according to the driving speed determined in the driving speed determining step.