An image capturing apparatus includes an image capturing unit for
capturing an image of an object; a focal length storing unit for storing
a focal length of the object which is outside of an image capturing
region of the image being captured by the image capturing unit by
corresponding to a positional relationship between the image capturing
unit and the object; an image capturing region variation detecting unit
for detecting variation in the image capturing region of the image
capturing unit; a positional relationship predicting unit for predicting
a positional relationship between the image capturing unit and the object
after the image capturing region of the image capturing unit is varied on
the basis of the variation in the image capturing region detected by the
image capturing region variation detecting unit; and a focus adjustment
control unit for controlling focus adjustment by the image capturing unit
on the basis of the focal length stored by the focal length storing unit,
wherein the focal length is corresponded to the positional relationship
predicted by the positional relationship predicting unit.