How to use Nikon SLR external flash

1, set to P position, set the flash to auto, shoot, adjust the exposure on this basis, and then adjust the flash output. Flash is called flashlight in English and electronic flash in Chinese, also called high-speed flash.

2. Exposure refers to the amount of light entering the lens and shining on the photosensitive element in the process of photography, which is controlled by aperture, shutter and sensitivity. Aperture, shutter and sensitivity can affect whether a picture is exposed correctly, in which aperture and speed jointly determine the amount of light entering, and ISO determines the photosensitive speed of ISOCCD/CMOS.

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