Covering a 46.3mm image circle, the Zeiss Supreme Prime 40mm T1.5 Lens can be used with full-frame and Super35 sensors. The internal focus design of this compact lens ensures very minimal focus breathing. Additionally, the Zeiss eXtended Data system transfers lens data to a camera, Master Lockit, or select other devices via a LEMO cable connection to allow for adjustment of distortion and shading. This can be done in real time or with a variety of software. The lens has an interchangeable PL mount and is marked in feet.