The 85mm T1.5 is a manual focus prime lens developed for professional video and movie making. The toothed de-clicked aperture and focus rings are designed for smooth, silent operation and compatibility with professional geared follow-focus systems. These modifications allow for extremely precise control over focus and aperture during video recording / filming, making fine adjustmens a pleasure. With a maximum aperture of T1.5, perfect portraiture and low light shooting is obtainable. This exceptionally fas aperture along with an 8 blade iris is ideal for shallow depth of field with attractive bokeh effect.