BELICHTUNGSREGELEINRICHTUNG

摘要

An exposure control device comprises a circuit (36) which sets a light measuring area on an image sensing plane, a discriminating circuit (15) which discriminates varied states of the image sensing plane through video signals corresponding to the inside and the outside of the light measuring area and an exposure compensating circuit (2, 16) which compensates the state of exposure to light, is arranged to shift the position of the light measuring area to trace an object's image at least when the exposure compensating circuit is in operation. The device operates in a first mode in which a quantity of light is measured on the basis of the average video signal level of the whole image sensing plane, a second mode in which the light quantity is measured with weight attached to a video signal part obtained from the inside of the light measuring area, and a third mode in which the light quantity is measured with weight attached to the video signal of the light measuring area by shifting the light measuring area to trace the object. <IMAGE>