April 2014
Intermediate to advanced
65 pages
1h 40m
English
Content preview from The Magic of Light Painting
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Light-Painting Exposures
As discussed in Chapter 1, the power of the flashlight is measured in lumens. The higher the lumen value the brighter the flashlight. The bulk of my light painting is done with a 65-lumen Surefire. The brighter flashlight in my kit is the 100-lumen Surefire.
Remember, the ambient exposure is controlled by the f/stop and shutter speed. The light-painting exposure, though, is controlled by the aperture, length of time spent painting, distance from the flashlight to the subject, and subject reflectivity. Smaller apertures such as f/22 require much more time painting for a good exposure. Larger apertures such as f/4 require less time, but provide far less depth of field.
The aperture is an important consideration because ...
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