The Samyang 21mm f / 1.4 ED AS UMC CS is a high speed, manually focused wide-angle lens for mirrorless APS-C cameras.
Excellent for shooting in poor lighting conditions or when you want to create short depth of field to make the main subject stand out against a blurry background.
For a lens with such a large aperture it is relatively small and light weight (about 280 grams) but solidly built with a metal barell.
The optical design consists of 8 elements in 7 groups. Two aspherical elements counteract spherical aberraion and ensure high sharpness across the entire image at all apertures. A lens of ED-glass (Extra-low dispersion) minimizes the risk of chromatic aberration and helps the lens produce pleasing colors
Features - 21mm wide-ange lens with high speed aperture (f/1.4) - Built for mirrorless cameras with APS-C size sensors - Lightweight and compact - Manual focus with smooth focus ring - Kåpor av metall - 2 aspherical elements and 1 of ED glass for maximum image quality