VIEWFINDER APERTURE CORRECTION

摘要

In a viewfinder aperture correction, contours in a viewfinder signal are enhanced (R5, R9) to obtain stressed contours when said viewfinder signal is correctly focused. To accentuate their visibility, and thus to better indicate correct focussing, even when viewed from a distance of about 0.5 m, the stressed contours are modulated (SS, T4) at a given frequency to accentuate their visibility.