The LEICA D VARIO-ELMARIT 14-50mm/F2.8-3.5 lens (also being introduced today) is equipped with an aperture ring, in addition to a focus ring and zoom ring, for easy, direct aperture setting.是什么意思_The LEICA D VARIO-ELMARIT 14-50mm/F2.8-3.5 lens (also being introduced today) is equipped with an aperture ring, in addition to a focus ring and zoom ring, for easy, direct aperture setting.在线翻译_英语_读音_用法_例句