Samyang 50mm f/1.4 AS UMC Lens for Pentax K

The optical design of the lens consists of 9 elements in 6 groups including one hybrid aspherical element and one aspherical element to reduce chromatic aberrations. Also, lens elements are coated with an Ultra Multi-Coating to improve light transmission and minimize flare and ghosting. Eight diaphragm blades create a circular aperture for more attractive out-of-focus highlights.

As a manual focus and manual aperture lens, it provides a rubberized focus ring and clear aperture, distance and depth of field markings. Additionally, an included petal-shaped lens hood blocks unwanted light and protects the lens.

Standard length prime lens for full frame cameras, also compatible with APS-C cameras on which it has a 35mm focal length equivalence of 75mm

Very fast maximum aperture of f/1.4 for effective low light capture and shallow depth of field focus control

Hybrid aspherical and aspherical lens elements control chromatic aberrations for clear and color-accurate images

Ultra Multi-Coating (UMC) improves light transmission and reduces ghosting and flare

Manual focus lens

Eight-blade diaphragm creates circular aperture

This lens features a mechanical aperture coupling that permits the use of aperture priority and automated exposure modes, as well as the ability to control the aperture setting with Pentax DSLRs

Includes removable petal-shaped lens hood