How many times has it happened? An instrumentation cameraman takes a selection of still cameras from the controlled environment of a calibration lab to a research test site in the dry desert or a humid swamp to record a still sequence of a one-of-a-kind test. Each camera is carefully set up and checked out, protected from the elements and triggered at the proper moment. Yet the lab results indicate that one or more of the photographs are overexposed and the image is smeared. Critical data is lost or marginal and there is no possibility of retakes. The loss can be measured in the thousands of dollars.