Traditional Culture Encyclopedia - Photography and portraiture - What is the meaning of evgv in the exposure instrument?

What is the meaning of evgv in the exposure instrument?

Exposure value. EVGV = exposure value, that is, exposure value, an expression of exposure, and exposure value represents the reciprocal calculation method of aperture and shutter. An exposure meter is an instrument used to measure the intensity of light. In photography, the exposure meter is used to determine the appropriate exposure time.