In April, 2014, the Samyang 10mm F2.8 ED AS NCS CS made its debut as a premium ultra-wide angle DSLR lens with some of Samyang's latest optical technologies, including the Nano Coating System.
Widest rectilinear prime available for Pentax; Exceptionally sharp across the frame; Fast F2.8 aperture; Unobtrusive barrel distortion; Good contrast; Minimal chromatic aberrations; Resistant to ghosting; Nice starburst effect at night; Compact and easy to carry; Automatic aperture control (full P,...
Prominent vignetting at F2.8 and F3.5; Difficult to focus on nearby subjects through the viewfinder; Harsh bokeh / sub-optimal for close-ups; Not possible to use lens filters; Prone to harsh flare in strong; direct light; No in-camera lens corrections; Only 1 year of warranty in the US; Potential...