DMF (Direct Manual Focus) functions previously offered mainly on Carl Zeiss, G and other high-performance lenses are included with the SAL18135. DMF allows users to quickly switch between AF (autofocus) and MF (manual focus) without removing their eyes from the viewfinder to easily seize fleeting photo opportunities with success. The SAL18135 reduced weigh of 14 oz./398 grams makes it easy to shoot while also finding ways to enhance the shooting experience. Its weight was especially reduced in the front of the lens to improve overall balance and make it easier to hold the camera steady when taking photos.