Patent ID: 8860874

Claim:
An image sensing device comprising: an image pick-up element; a focus-lens which is arranged in front of the image pick-up element; a control section for controlling a position of the focus-lens to be traveled to an in-focus position; and an image processing section for having an output picture imaged by the image pick-up element and displayed by a display section be input therein and for adjusting the output picture, wherein: the image processing section comprises a storage section for storing a de-focus threshold value which is a predetermined threshold value of a variation amount of an intensity value corresponding to a focus-lens travel distance, a first adder section for calculating an intensity value time difference variation amount which is the variation amount between the intensity value of the output picture being input and the intensity value of a predetermined-time previous output picture before the output picture is input, and a variation amount comparison section for comparing the intensity value time difference variation amount and the de-focus threshold value, when the variation amount comparison section determines that the intensity value time difference variation amount is less than the de-focus threshold value to be a comparison object, the image processing section calculates the intensity value of the output picture after being adjusted by subtracting the intensity value time difference variation amount from the intensity value of the output picture being input, the storage section stores a de-focus threshold value information which provides a correspondence between a focus-lens travel distance which is a travel distance of the focus-lens and the de-focus threshold value which is a predetermined value indicating the variation amount of the intensity value of the output picture, and the variation amount comparison section varies the de-focus threshold value to be a comparison object, corresponding to the predetermined-time previous focus-lens travel distance.