Zoom lens system having electrical control of moving elements

摘要: From an object side, there are a fixed lens, first movable second and lens being positioned in that order, wherein the movble is coupled with position detecting means means, at same time it shifting which controlled by above mentioned two means. For photographing involves zooming, shifted for focusing. Next, as shifted, amount of detected then based on value same. The said determined functional equation has been set optical system designed, while adjustment While magnification variation performed result will be no image image.