15Camera-Based Functions for Your Flash
This chapter covers the settings you can make in your Nikon SLR that affect flash photography. Each of them is important to know, and many of them can help improve your photographs. Let’s go through them one by one.
FV Lock
FV Lock stands for Flash Value Lock, a feature that allows you to set the flash output value once and continue shooting while retaining the same flash output. Nikon bills it as a way to set the exposure with the subject in the center of the frame and then recompose the picture so the lighting is accurate when the person is off-center (see graphic below).
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