T12 Large Aperture Featuring large T12 aperture this cine lens is perfect for lowlight filming No need to use extremely high ISO and youll get a pure low noise night scene The fast T12 aperture also contributes to pleasing bokeh quality and clear subject giving the footage extra expressiveness and aesthetics Night Walker 55mm SIRUI Night Walker Series cine lenses come in S35 coverage The Night Walker 55mm is equivalent to a 77mm full frame lens suitable for closeups portrait filming SIRUI Night Walker is available in classic black and fashionable metal gray Both choices are premium and aesthetic in the appearance Outstanding Optical Performance SIRUI Night Walker takes a revolutionary step in improving the optical performance at even the max aperture achieving perfect sharpness minimal focus breathing and well controlled aberration Premium Cine Body The strong aluminum cine housing makes it sturdy yet portable in hand It helps to protect inner optical elements while the minimum weight of each single lens is around only 500g creating a new era of lightweight fast aperture lens Model SIRUI 55mm T12 Focus Length 55mm Frame APSCS35 Aperture T12T16 Lens Structure 11 elements in 10 groups Aperture Blade 12 Minimum Focus Distance 06m Filter Spec M67075 Rotation Angle of the Focus Ring 270 Max Diametermminches 79311 Diameter of the Focus Ringmminches 776306 Lengthmminches 8433