Camera apparatus with exposure correction based on movement of the object

1. A camera apparatus comprising:

an imaging device;

a first unit arranged to detect a speed of movement of a subject on the basis of an output of the imaging device;

a second unit arranged to determine a shutter speed and an f-stop value by an auto exposure control function;

a third unit arranged to correct the shutter speed determined by the second unit, based on the speed of the movement of the subject detected by the first unit; and

a fourth unit arranged to correct the f-stop value determined by the second unit, based on the speed of the movement of the subject detected by the first unit.

2. The camera apparatus according to claim 1 , wherein

the third unit corrects the shutter speed based on X=X 1 /(k·A), where X 1 is the shutter speed determined by the second unit, A is the speed of the movement of the subject detected by the first unit, k is a coefficient and X is a corrected shutter speed.

3. The camera apparatus according to claim 2 , wherein the fourth unit corrects the f-stop value determined by the second unit by multiplying the f-stop value by (k·A), where A is the speed of the movement of the subject detected by the first unit, and k is the coefficient.

4. A camera apparatus comprising:

an imaging device;

a first unit arranged to detect a speed of movement of a subject on the basis of an output of the imaging device;

a second unit arranged to determine a shutter speed and an f-stop value by an auto exposure control function;

a third unit arranged to correct the shutter speed determined by the second unit, based on the speed of the movement of the subject detected by the first unit;

a fourth unit arranged to correct the f-stop value determined by the second unit, based on the speed of the movement of the subject detected by the first unit;

a gain control circuit arranged to control a level of an output signal from the imaging device; and

a fifth unit arranged to control a gain of the gain control circuit based on the speed of the movement of the subject detected by the first unit.

5. The camera apparatus according to claim 4 , wherein

the third unit corrects the shutter speed based on X=X 1 /(k·A), where X 1 is the shutter speed determined by the second unit, A is the speed of the movement of the subject detected by the first unit, k is a coefficient and X is a corrected shutter speed.

6. The camera apparatus according to claim 5 , wherein the fourth unit corrects the f-stop value determined by the second unit by multiplying the f-stop value by (k·A), where A is the speed of the movement of the subject detected by the first unit, and k is the coefficient.

7. The camera apparatus according to claim 6 , wherein

the fourth unit comprises a unit which adjusts the f-stop value to a predetermined minimum value when a corrected f-stop value is smaller than the minimum value, and

the fifth unit controls the gain control circuit to increase the gain in a case where the fourth unit adjusts the f-stop value to the minimum value.

8. A camera apparatus comprising:

an imaging device;

a first unit arranged to detect a speed of movement of a subject on the basis of an output of the imaging device;

a second unit arranged to determine a shutter speed and an f-stop value by an auto exposure control function;

a third unit arranged to correct the shutter speed determined by the second unit, based on the speed of the movement of the subject detected by the first unit;

a fourth unit arranged to correct the f-stop value determined by the second unit, based on the speed of the movement of the subject detected by the first unit;

a gain control circuit arranged to control a level of an output signal from the imaging device; and

a fifth unit arranged to control a gain of the gain control circuit based on the speed of the movement of the subject detected by the first unit; and

a sixth unit arranged to control a strobo flashing in a case where a shutter is released, based on the speed of the movement of the subject detected by the first unit.

9. The camera apparatus according to claim 8 , wherein

the third unit corrects the shutter speed based on X=X 1 (k·A), where X 1 is the shutter speed determined by the second unit, A is the speed of the movement of the subject detected by the first unit, k is a coefficient and X is a corrected shutter speed.

10. The camera apparatus according to claim 9 , wherein the fourth unit corrects the f-stop value determined by the second unit by multiplying the f-stop value by (k·A), where A is the speed of the movement of the subject detected by the first unit, and k is the coefficient.

11. The camera apparatus according to claim 10 , wherein

the fourth unit comprises a unit which adjusts the f-stop value to a predetermined minimum value when a corrected f-stop value is smaller than the minimum value, and

the fifth unit controls the pain control circuit to increase the pain in a care where the fourth unit adjusts the f-stop value to the minimum value.

12. The camera apparatus according to claim 11 , wherein

the sixth unit drives a strobo mechanism when a shutter button is pressed, in a case where brightness is insufficient even if the gain of the gain control circuit is increased to a maximum value by the fifth unit.