Claims
- 1. A digital camera comprising:
an image sensing element for generating image data of an object; a light emission device for emitting the light to illuminate the object during photography; a first detector for detecting the contrast of the image data; a lens driver for driving the lens based on the contrast detected by the first detector; a second detector for detecting the luminance of the image data; a light emission controller for executing the light emission of the light emission device to detect the contrast when the luminance detected by the second detector is less than a specific value; a power source for supplying an electrical power to the light emission device and being chargeable; and a lens drive controller for inhibiting the driving of the lens by the lens driver during charging of the power source.
- 2. The digital camera according to claim 1, further comprising a discriminator for discriminating whether or not the lens is focused based on the contrast obtained by the first detector during light emission of the light emission device, and the lens driving drives the lens repeatedly when the lens is not focused.
- 3. The digital camera according to claim 2, wherein when the lens driving is again executed, the light emission controller for executing the light emission of the light emission device when the luminance detected by the second detector is less than a specific value.
- 4. The digital camera according to claim 1, wherein the light emission controller controls the amount of light emission for detecting the contrast so as to be less than the light emission during photography.
- 5. A digital camera comprising:
an image sensing element for generating image data of an object; a light emission device for emitting the light to illuminate the object during photography; a first detector for detecting the contrast of the image data; a lens driver for driving the lens based on the contrast detected by the first detector; a second detector for detecting the luminance of the image data; a light emission controller for executing the light emission of the light emission device to detect the contrast when the luminance detected by the second detector is less than a specific value; and a gain controller for increasing the gain when the first detector detects the contrast under the light emission by the light emission device.
- 6. The digital camera according to claim 5, wherein the gain controller returns the increased gain to an original gain when the photography is executed.
- 7. A digital camera comprising:
an image sensing element for generating image data of an object; a light emission device for emitting the light to illuminate the object during photography; a first detector for detecting the contrast of the image data; a lens driver for driving the lens based on the contrast detected by the first detector; a second detector for detecting the luminance of the image data; a setter for setting the prohibition of the light emission by the light emission device; and a light emission controller for prohibiting the light emission during detection of the contrast when prohibition of flash emission has been set by the setter, and for executing the light emission of the light emission device to detect the contrast when the luminance detected by the second detector is less than a specific value and when the prohibition of flash emission has not been set.
- 8. The digital camera according to claim 7, further comprising an indicator for alerting that the lens driving based on the detected contrast is impossible when the detected luminance is less than a specified value and the light emission is prohibited.
- 9. The digital camera according to claim 8, wherein the lens driver moves the lens to a specific position when the lens driving based on the detected contrast is impossible.
- 10. A digital camera comprising:
an image sensing element for generating image data of an object; a light emission device for emitting the light to illuminate the object during photography; a first detector for detecting the contrast of the image data; a lens driver for driving the lens based on the contrast detected by the first detector; a second detector for detecting the luminance of the image data; a light emission controller for executing the light emission of the light emission device to detect the contrast when the luminance detected by the second detector is less than a specific value; a power source for supplying an electrical power to the light emission device and being chargeable; and a discriminator for discriminating whether or not the lens is focused based on the contrast obtained by the first detector in parallel with the charging of the power source.
- 11. A digital camera comprising:
an image sensing element for generating image data of an object; a light emission device for emitting the light to illuminate the object during photography; a first detector for detecting the contrast of the image data; a lens driver for driving the lens based on the contrast detected by the first detector; a second detector for detecting the luminance of the image data; a light emission controller for executing the light emission of the light emission device to detect the contrast when the luminance detected by the second detector is less than a specific value; and a light adjuster for adjusting the amount of light emission by the light emission device during photography, and for prohibiting adjustment of the amount of light emission of the light emission device when the contrast is detected.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-173575 |
Jun 2000 |
JP |
|
Parent Case Info
[0001] This application is based on Patent Application No. 2000-173575 filed in Japan, the content of which is hereby incorporated by reference.