The NOKTON 40mm F1.2 Aspherical is a high-speed manual focus lens optimized for the imaging sensors of Sony mirrorless cameras. While retaining a compact size, this lens realizes a world first* as a full frame 40mm lens with a large F1.2 aperture. The optical formula features two elements each with two aspherical surfaces, so you can enjoy reliable optical performance and gentle very out-of-focus bokeh at maximum aperture. When used on a camera with an APS-C sensor, the 40mm focal length is equivalent to 60mm, enabling the lens to be used as a standard lens on both full frame and APS-C cameras. The aperture ring has click stops in 1/3 steps. The lens also features a click stop switching mechanism that enables the click stops to be turned off when shooting video. * As of August 2017 (check performed by Cosina) Main features ■ Full frame Sony E-mount with electrical contacts ■ Enhanced high performance utilizing aspherical lens surfaces ■ Optical design optimized for digital imaging sensors ■ Extremely solid and durable all-metal barrel ■ Manual focus for precise focusing ■ Installed with aperture click stop switching mechanism for video ■ Minimum focus distance of 35cm
Sharp Manual Focus Compact Lens with two Aspheric elements