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Flash lamp controlling system and method for backlight shooting

A technology of backlight photography and control method, which is applied in the direction of exposure control, photometry, optics, etc., and can solve the problem of overexposure of the background

Inactive Publication Date: 2008-06-11
ALTEK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the supplementary light of the flash is concerned, since the image capture device (such as a digital camera) will determine an aperture value based on the measured exposure value, this aperture value may not be properly adjusted with the flash and the background will be overexposed

Method used

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  • Flash lamp controlling system and method for backlight shooting
  • Flash lamp controlling system and method for backlight shooting
  • Flash lamp controlling system and method for backlight shooting

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Embodiment Construction

[0044] The present invention is a flashlight control system and method for backlight photography, which means that when taking backlight photography, the difference between the aperture number of the background and the foreground can be set in an image capture device (a digital camera in a preferred embodiment), and then Fill light with flash.

[0045]If the outdoor photographer faces the sun or other light sources, and the person being photographed faces the sun or other light sources, it is usually necessary to add a flash or other light sources when shooting, so that the desired subject will not be affected by the backlight. Therefore, the flash light control system and method provided by the present invention first obtain the exposure value (Exposure Value, EV value) of the foreground and the background by the light metering instrument or the light metering function of the shooting device itself , including the shutter and the aperture value, etc. After determining the bri...

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Abstract

A flashlamp control system of backlight photography and method are provided, which aim at setting aperture grade difference between back scene and fore scene firstly; then supplementing light by utilizing flashlamp, wherein, the step firstly measures light of the main body to be photographed to obtain aperture value of fore scene, and then measures light of the back scene to obtain aperture value of the back scene in a similar way; setting aperture grade difference between the back scene and the fore scene; focusing the main body to work out distance of the main body; reckoning flashlamp index the flashlamp should have to carry through backlight photography according to the aperture value obtained from aperture value difference.

Description

technical field [0001] The invention relates to a flash light control system and method for backlight photography, in particular to a photographing method in which the difference in the aperture series between the background and the foreground is set and then supplemented by a flash light during backlight photography. Background technique [0002] When taking pictures, backlight photography is one of the most difficult shooting situations to control. For example, people who are shooting outdoors face the sun or other light sources, while the people being photographed are facing away from the sun or other light sources. Add flash or other light sources so that the required subject will not produce unrecognizable black shadows due to backlighting. However, known digital cameras lack the setting function of effectively using flash to shoot good contrast. The relationship between the background causes the phenomenon of overexposure. [0003] When shooting with a flash, the aper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B7/093G03B7/16G03B7/28
Inventor 黄毓承
Owner ALTEK CORP