Multi-flash Setups
Once you have mastered balancing flash with ambient light, then it’s easy to start to build up a picture using more than one flash. Flashes can be used to pick out parts of a scene that would normally be in shadow or are darker than you would like. By altering the effect of the ambient light exposure using your ISO, shutter speed, and aperture, you can change the overall look of the scene, and by introducing one flash at a time (with a variety of different modifiers, power settings, zoom positions, and color temperatures) you can highlight the important areas and leave some unlit.
The idea is to build up the exposure one light at a time, so that you can see the effect of the each change. As the light from the flash is likely ...
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