An image capturing apparatus comprising: an image sensor that outputs analog pixel signals; an analog-image processing unit that receives the analog pixels signals and processes the analog pixel signals to output digital image data; a synchronising-signal generating unit that generates vertical synchronising signals and horizontal synchronising signals; a timing generator that generates a timing signal and provides the timing signal to the image sensor and to the analog-image processing unit based on the vertical synchronising signal and the horizontal synchronising signal; a mechanical shutter that is operable into an open state where the mechanical shutter exposes the image sensor to light and into a closed state where the mechanical shutter covers the image sensor from light; and a control unit that, when a instruction to capture a still image is input, performs completing of parameter settings to the timing generator and time setting for time, at which the mechanical shutter is to be closed, the parameter settings causing an operation mode of the image sensor to switch from an image monitoring mode to a still-image photographing mode, characterized in that: in response to the instruction to capture a still image, the control unit inserts a dummy still-image exposure frame-period and a dummy still-image read frame-period into a point in time before a still-image exposure frame-period and a still-image read frame-period, performs completing of the parameter settings to the timing generator during the dummy still-image exposure frame-period, and then performs the time setting for the time at which the mechanical shutter is to be closed when the still-image exposure frame-period is started after an elapse of the dummy still-image read frame-period, wherein each frame-period is started with a vertical synchronising signal. an image sensor that outputs analog pixel signals; an analog-image processing unit that receives the analog pixels signals and processes the analog pixel signals to output digital image data; a synchronising-signal generating unit that generates vertical synchronising signals and horizontal synchronising signals; a timing generator that generates a timing signal and provides the timing signal to the image sensor and to the analog-image processing unit based on the vertical synchronising signal and the horizontal synchronising signal; a mechanical shutter that is operable into an open state where the mechanical shutter exposes the image sensor to light and into a closed state where the mechanical shutter covers the image sensor from light; and a control unit that, when a instruction to capture a still image is input, performs completing of parameter settings to the timing generator and time setting for time, at which the mechanical shutter is to be closed, the parameter settings causing an operation mode of the image sensor to switch from an image monitoring mode to a still-image photographing mode, characterized in that: in response to the instruction to capture a still image, the control unit inserts a dummy still-image exposure frame-period and a dummy still-image read frame-period into a point in time before a still-image exposure frame-period and a still-image read frame-period, performs completing of the parameter settings to the timing generator during the dummy still-image exposure frame-period, and then performs the time setting for the time at which the mechanical shutter is to be closed when the still-image exposure frame-period is started after an elapse of the dummy still-image read frame-period, wherein each frame-period is started with a vertical synchronising signal. in response to the instruction to capture a still image, the control unit inserts a dummy still-image exposure frame-period and a dummy still-image read frame-period into a point in time before a still-image exposure frame-period and a still-image read frame-period, performs completing of the parameter settings to the timing generator during the dummy still-image exposure frame-period, and then performs the time setting for the time at which the mechanical shutter is to be closed when the still-image exposure frame-period is started after an elapse of the dummy still-image read frame-period, wherein each frame-period is started with a vertical synchronising signal.