Camera capable of automatic focal distance correction utilizing stored correction data selected responsive to a direction of movement of a taking lens system

A camera comprising:

• ranging means for measuring a distance to an object;
• a photographic optical system with a changeable focal distance in which a focal point is adjusted on the basis of an output of said ranging means, said optical system being movable from a retraction position to a photographic ready position responsive to operation of a power on switch;
• focal distance detection means for detecting a focal distance of said photographic optical system;
• first storage means for storing a direction where a focal distance of said photographic optical system is changed when moved at least to a photographic ready position;
• second storage means for storing an adjustment amount of a focal point according to a selected focal distance of said photographic optical system and a direction of a change in a focal distance thereof;
• and
• control means for adjusting a focal point of said photographic optical system by using values stored in said second storage means on the basis of an output of said focal distance detection means and values stored in said first storage means.

A camera comprising:

• ranging means for measuring a distance to an object;
• a photographic optical system with a changeable focal distance in which a focal point is adjusted on the basis of an output of said ranging means, said optical system being movable from a retraction position to a photographic ready position responsive to operation of a power on switch;
• focal distance detection means for detecting a focal distance of said photographic optical system;
• first storage means for storing at least in a photographic ready position whether a focal distance of said photographic optical system was changed in a first direction or in a second direction;
• second storage means for storing an adjustment amount of a focal point for cases in which a selected focal distance is changed in said first direction and in which a selected focal distance is changed in said second direction;
• and
• control means for adjusting a focal point of said photographic optical system by using values stored in said second storage means based on an output of said ranging focal distance detection means and data stored in said first storage means.

A camera comprising:

• ranging means for measuring a distance to an object;
• a photographic optical system with a changeable focal distance in which a focal point is adjusted based on an output of said ranging means, said optical system being movable from a retraction position to a photographic ready position responsive to operation of a power on switch;
• focal distance detection means for detecting a focal distance of said photographic optical system;
• first storage means for storing at least in a photographic ready position whether a focal distance of said photographic optical system was changed in a first direction or in a second direction;
• second storage means for storing an adjustment amount of a focal point for each one of two cases in which a selected focal distance is changed in said first direction and in which a selected focal distance is changed in said second direction;
• and
• control means for adjusting a focal point of said photographic optical system by using values stored in said second storage means based on an output of said ranging focal distance detection means and data stored in said first storage means.

A zoom camera comprising:

• ranging means for measuring a distance to an object, said optical system being movable from a retraction position to a photographic ready position responsive to operation of a power on switch;
• driving means for driving an optical system in response to operating means to change a focal distance thereof;
• focal distance detection means for detecting said focal distance;
• storage means for storing a direction where a focal distance is changed at least in a photographic ready position;
• and
• arithmetic means for computing a drive amount of a focusing lens from a result obtained from said ranging means, said focal distance and a direction of change in said focal distance.