The NOKTON 50mm F1.2 X Mount is a fast manual focus medium telephoto lens that covers the APS-C size image circle. It has an angle of view equivalent to 75mm in full-frame. The lens construction is based on a Sonnar type formula with asymmetrical front and rear groups and offers a large F1.2 aperture. The lens is compact in size with an overall length of 49.0 mm and a weight of 290 g, making it easy to handle while employing spherical elements and an extension system. The lens produces a large bokeh effect when wide open, and sharp descriptive resolution when the aperture is stopped down allowing the photographer to enjoy a variety of photographic expression through aperture control.