A versatile standard zoom lens designed for Sony E-mount full-frame cameras. The constant f/2.8 aperture delivers consistent light gathering across the entire focal range, enabling sharp performance in challenging lighting conditions and providing excellent subject isolation through shallow depth of field. The GM (Gold Master) designation reflects Sony's premium optical engineering, featuring advanced glass elements that minimize distortion and chromatic aberration. This used lens maintains the optical quality expected from Sony's professional-grade lineup, making it suitable for photography spanning portraits, events, and general-purpose shooting. The robust construction and weather-sealed design offer durability for demanding use. As a used item, it represents excellent value for photographers seeking professional-grade optics without the premium new price.