Photographing apparatus and method

1. A photographing apparatus comprising:

an imaging device arranged including a matrix of pixels, each which accumulates accumulation charges according to an amount of light incident thereon;

an accumulation charge reader that reads the accumulation charges at a time difference based on the position of each row or column of the pixels;

a reset device that resets an entirety of the accumulation charges of the imaging device before a main exposure; and

a reset timing changer that changes a reset timing for resetting the accumulation charges with respect to a synchronization pulse corresponding to a time for reading the accumulation charges.

2. The photographing apparatus of claim 1 , further comprising:

a main flashing component that performs main flashing toward an object during the main exposure;

a preliminary flashing component that performs preliminary flashing toward an object before the main exposure;

a first preliminary exposure component that performs a first preliminary exposure using a first preliminary exposure condition before the main exposure;

a second preliminary exposure component that performs a second preliminary exposure using a second preliminary exposure condition with the preliminary flashing in addition to the first preliminary exposure condition; and

a main exposure condition determination component that determines an amount of flash light for the main flashing by comparing the first preliminary exposure with the second preliminary exposure,

wherein the reset device performs a reset operation for resetting an entirety of the accumulation charges of the imaging device before the main exposure and the first and second preliminary exposure.

3. The photographing apparatus of claim 2 , wherein the first and second preliminary exposures are performed for a part of the rows and columns of the imaging device.

4. The photographing apparatus of claim 2 , further comprising a charger that performs an additional charging operation for the main flashing before the main exposure.

5. The photographing apparatus of claim 1 , wherein the reset timing changer changes the reset timing by manipulation from an external manipulation member.

6. The photographing apparatus of claim 1 , wherein the reset timing changer changes the reset timing according to a photographing condition.

7. The photographing apparatus of claim 1 , wherein the reset timing changer sets the reset timing for the accumulation charges to a point in time which is just before the synchronization pulse.

8. The photographing apparatus of claim 1 , wherein the imaging device does not have a memory unit for storing the accumulation charges.

9. The photographing apparatus of claim 1 , further comprising a shutter that is nearer the object than the imaging device is, that changes to be in an open state during the main exposure, and that changes to be in a closed state after a predetermined time has elapsed after the reset operation for resetting the accumulation charges before the main exposure.

10. The photographing apparatus of claim 1 , further comprising a diaphragm driver that drives a diaphragm for controlling an amount of exposure light incident on the imaging device before the main exposure.

11. The photographing apparatus of claim 1 , wherein the reset timing changer changes the reset timing so that the entirety of the accumulation charges are reset at a time prior to the time at which the accumulation charges are read as triggered by the synchronization pulse.

12. A photographing method comprising:

operating an imaging device, arranged including a matrix of pixels, so that each said pixel accumulates accumulation charges according to an amount of light incident thereon;

reading the accumulation charges at a time difference based on the position of each row or column of the pixels;

resetting an entirety of the accumulation charges of the imaging device before a main exposure; and

changing a reset timing for resetting the accumulation charges with respect to a synchronization pulse corresponding to a time for reading the accumulation charges.

13. The photographing method of claim 12 , further comprising:

performing main flashing toward an object during the main exposure;

performing preliminary flashing toward an object before the main exposure;

performing a first preliminary exposure using a first preliminary exposure condition before the main exposure;

performing a second preliminary exposure using a second preliminary exposure condition with the preliminary flashing in addition to the first preliminary exposure condition;

determining an amount of flash light for the main flashing by comparing the first preliminary exposure with the second preliminary exposure; and

resetting an entirety of the accumulation charges of the imaging device before the main exposure and the first and second preliminary exposure.

14. The photographing method of claim 13 , further comprising:

performing a charging operation for the main flashing before the main exposure.

15. The photographing method of claim 13 , wherein the changing step changes the reset timing so that the entirety of the accumulation charges are reset at a time prior to the time at which the accumulation charges are read as triggered by the synchronization pulse.

16. The photographing method of claim 13 , wherein the first and second preliminary exposures are performed for a part of the rows and columns of the imaging device.

17. The photographing method of claim 12 , wherein the reset timing is changed by manipulation from an external manipulation member.

18. The photographing method of claim 12 , wherein the reset timing is changed according to a photographing condition.

19. The photographing method of claim 12 , further comprising:

setting the reset timing for the accumulation charges to a point in time which is just before the synchronization pulse.

20. The photographing method of claim 12 , wherein the step of operating the imaging device stores the accumulation charges without using a memory unit in the imaging device.

21. The photographing method of claim 12 , further comprising:

operating a shutter that is nearer the object than the imaging device is, so that the shutter is in an open state during the main exposure, and is in a closed state after a predetermined time has elapsed after the resetting of the accumulation charges before the main exposure.

22. The photographing method of claim 12 , further comprising:

driving a diaphragm to control an amount of exposure light incident on the imaging device before the main exposure.