The Panasonic LUMIX S-R1840 18 to 40mm F4.5 to 6.3 Full Frame Zoom Camera Lens is the world’s smallest and lightest zoom lens, weighing approximately 0.34lb. This AF-compatible mirrorless zoom lenses for full-frame mirrorless cameras is thinnest at just 40.9mm when retracted. Light Build Lens Its incredibly light build makes this lens a key addition to your kit. This lens can be a must-have for travel or anytime. | Panasonic | | Lumix 18-40mm Full Frame Lens F4.5-6.3 | Black | Best Buy