From the course: Lighting for Photographers: Flash Exposure
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Reviewing aperture, ISO, and shutter speed
From the course: Lighting for Photographers: Flash Exposure
Reviewing aperture, ISO, and shutter speed
In this movie we'll review in more detail how the exposure variables, ISO, shutter speed, and aperture work when using flash. Then in the next movie we'll introduce two new variables, the power of the flash, and the flash to subject distance, which when considered in combination with one another determine brightness or luminance. To review, let's start with the variables you should already be familiar with. First off, ISO. Let's see the visual effect of changing your ISO by looking at a series of images that I have shot in a controlled environment. I began at ISO 100, and I bracketed the ISO in third stop increments all the way to 1600 without adjusting any other exposure setting. As expected, the mannequin in front is properly exposed in the first frame, while the mannequin in back is underexposed. As I increase the ISO the exposure got brighter until at ISO 400, the mannequin in front is two stops overexposed and the dummy in back is properly exposed. As the ISO continue to increase…
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