Featuring a range of focal lengths from 14mm ultra-wide angle to 135mm, covering super-wide angle to portrait focal lengths, the NiSi Athena Cine Lenses provide exceptional versatility, making them ideal for a wide range of shooting scenarios and allows you to capture a wide variety of subjects. The lenses also boast a T-stop rating, which measures the actual amount of light transmission through the lens, ensuring consistent exposure across all focal lengths. 25/35/40/50 & 85mm all have a maximum aperture of T1.9, which makes it possible to get a soft bokeh for beautiful background separation. 18 and 135mm have both a maximum aperture of T2.2, and the 14mm lens have a T-stop of T2.4. They have an impressive image circle of 46mm, thus making them suitable for use with full-frame and even large-format sensors. The whole series comes in ARRI PL, Canon RF, Sony E, Panasonic/Leica L and Fuji G lens mount options, and offers Ultra-low chromatic aberration and micro-contrast control. It offers unparalleled image quality with finer image details. The Athena Prime Lenses have been designed to minimize focus breathing. This means that, regardless of the focal length or aperture setting, the change in field of view when adjusting focus from the minimum focus distance to infinity is extremely small.