At T 1.4 and averaging only 1.7 kg per lens, the SUMMILUX-C lenses are the smallest set of fast aperture, purpose-built prime lenses available for cinematography. Their patent focus design allows for a long focus throw even on these compact lenses.
 
Their unique design allows these cine lenses to be far smaller than any existing lenses below T2.0. At just 5.6” (142 mm) long and weighing between 3.5 and 4 pounds (1.6-1.8 kg), lens changes are easier and safer than ever, which is welcome news for camera assistants and hurried productions. Smaller lenses also result in smaller, lighter camera packages and cases as well as significantly smaller rigs.