Sirui Night Walker 24mm T1.2 S35 Cine Lens for Sony E-Mount. The Night Walker lenses are ideal for low-light shooting. Their ability to reduce light usage in poor lighting conditions makes you a fast-paced filmmaker. You don't necessarily have to use an extremely high ISO value, resulting in virtually noise-free night scenes. The lens's outstanding optical performance ensures an absolutely sharp image even at maximum aperture. At an open aperture of 2, you achieve a pleasing bokeh quality that adds additional expressiveness and aesthetics to your shots. The stepless aperture ring design allows for smooth and stable scene capture. Excellent optical performance is achieved through the use of ED glass and high-refractive lenses, which help reduce lens size while providing exceptional optical performance with perfect sharpness, minimal focus breathing, and tightly controlled aberration. Compact size: The minimum weight of a single lens with advanced optical construction is just 510 g, ushering in a new era of lightweight, fast lenses. Additionally, the robust aluminum alloy construction protects the internal optical elements.