noun
: a camera lens in which the focal length and the image size can be varied continuously so that the image remains in focus at all times — called also varifocal lens
noun
: a camera lens in which the focal length and the image size can be varied continuously so that the image remains in focus at all times — called also varifocal lens
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012