Trimming area control system in photo-printing

摘要

It has heretofore been extremely difficult to adjust the trimming area of a negative film image when printing a picture by a photo-printer. This invention obviates such difficulties by effectively driving and controlling a zoom lens by picking up a negative image with a TV camera provided with a zoom lens so as to facilitate monitoring the trimming areas with a monitor TV, and combining a video signal from the TV camera which corresponds to the carrier aperture of the negative film and a reference position signal which spot-scans the negative image.