The sony e mount rokinon 24mm t15 cine ed as if umc lens was developed primarily for film and video applications the cine version of rokinons 24mm lens features industry standard gearing for the focus and aperture ring and the aperture ring has been de clicked for smooth iris pulls the aperture and focus scales have also been relocated to the side of the lens where it is easier for focus pullers to read them this lens is designed for use on full frame and aps c sized sensors and provides