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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: 2009-08-12
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

[0043] The present invention is a flash control system and method for backlighting photography, which means that when backlighting photography, the difference in aperture levels between the background and the foreground can be set in an image capture device (a digital camera in a preferred embodiment), and then Use flash to fill light.

[0044]If the photographer is outdoors facing the sun or other light sources, and the person being photographed is facing the sun or other light sources, usually a flash or other light source is required during shooting, so that the required subject will not be backlit. The flash control system and method provided by the present invention first obtain the exposure value (EV value) of the foreground and the background by the light metering instrument or the metering function of the camera itself. , Including shutter and aperture, etc. After determining the brightness difference or aperture level required for the foreground and background, an apertur...

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PUM

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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 present invention relates to a flash control system and method for backlight photography, in particular to a photography method in which a flash is used to fill light after setting the difference in the number of apertures between the background and the foreground 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 are facing the sun or other light sources, and the person being photographed is facing the sun or other light sources, so people usually need to take pictures. Add flash or other light sources so that the required subject will not produce unrecognizable black shadows due to backlighting. Known digital cameras lack the effective use of flash to shoot good contrast settings, often because of fill light The relationship causes the background to be overexposed. [0003] When shooting with a...

Claims

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Application Information

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