A combination use of flash and natural light

Feb. 10, 2011 - PRLog -- In natural light (daylight), the photography does not normally require auxiliary lighting, because there is enough natural light brightness. Qian, however, in some cases is not, as in strong sunlight side light or backlit close-range shot and close-up figures activities or in direct sunlight in the window shooting portraits under the backlight, as well as indoor shooting under natural light conditions, the larger scene, etc., or because too much contrast between light and dark features, or because of uneven lighting, you need to fill light. Only a small flash light, and easy to control the amount of light, color temperature suitable, but also more light with the flash, is an ideal complement source, if used well, helps to compensate for the lack of natural light, improve the picture quality.

Practice shows that addition of natural light flash, can control the contrast, can adjust the color temperature, and sometimes also used when the modeling light. The image of mixed light intake, it is particularly delicate, soft, can produce a better visual effect. Now to talk about the flash and the outdoors with natural light. Here that the natural outdoor light, including direct sunlight and scattered light cloudy. In direct sunlight photography, lighting with flash added purpose of weakening the scene of light and dark contrasts, and to the impact of grain-level shaded fully revealed. Therefore, only when the subject is required when side light or backlit condition plus the flash. In this case, since the flash is used for auxiliary lighting, so exposure to sunlight should prevail, for the flash of illumination must be controlled, not to dominate.

Now the side light photography as an example: side light in direct sunlight shooting people, exposure to bright light facial prevail, the contrast between light and dark, through the flash fill light, the general control of 1:3 to 1:4 more appropriate. If you use the automatic flash, to control the ratio of the contrast between light and dark is very simple, just select the flash on the auto iris level, the choice of aperture than the use of cameras on the big one to one half can be. If the flash is just not on this level, but also by adjusting the camera aperture and shutter speed combination to solve the exposure. If you are using manual flash, you can adjust the flash power to devices, or flash to subject distance, or approach lights add yarn to control the amount of light flash: There are two points to note, if your camera is the focal plane shutter. to only use a slow film, or add a neutral gray lens filter, because the focal plane shutter flash sync speed is usually 1 / 60 second or 1 / 125 sec (currently more advanced Camera 1 / 250 second), such as with fast film, in the strong sunlight do not apply.

Shooting color film in direct sunlight, such as the addition of flash, to note changes in daylight color temperature. Especially after sunrise and before sunset while shooting portraits, the scene in order to maintain the light tone and atmosphere, we must reduce the flash color temperature on the addition of filters. Scattered light in the rainy-day shooting photos of people, often because of the subject by light dull, contrast is very weak, leaving the tone of gray level picture, boring. In this case. Can be used as a modeling light flash, with flash set a side light and backlight and other lighting effects to achieve the increase in contrast, abundant levels of purpose. There are two specific approaches: one is to decide the flash of light, or placed in the subject's side of the height, played side-effects; or placed in the dorsal height, play the effect of light profile. People face natural light exposure can prevail, the flash power and distance with the camera aperture transferred to more than one to one half can be. But to do so, you need a longer wire. The other is that dual-lamp photography can be fully modeled light cloth method, a decide lights, one for a vice lights, light position and light than can need. The difference is due to natural light exposure is subject to, the main task is to associate light caused the main light, so the power in determining the auxiliary lamp, the aperture less than the level used by the camera as well, so as not to undermine the effect of natural light.

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