The 12mm f/2.8 ED AS IF NCS UMC Fisheye Lens for Canon EF Mount from Rokinon provides a 180° diagonal angle of view on full‎-frame cameras for an ultra‎-wide angle‎,‎ distorted perspective that is useful for architectural interiors‎,‎ landscapes and creative experimentation in any photographic application‎.‎ The f/2.8 maximum aperture is effective in low light situations and enables some measure of shallow depth of field control‎.‎

The lens‎'‎ sophisticated optical design consists of 12 lens elements arranged in 8 groups including three elements made of low dispersion ED glass and two aspherical lens elements to minimize coma and chromatic aberrations‎.‎ Highly effective nanocrystal anti‎-reflection ‎(‎NCS‎)‎ coating applied together with UMC coatings improve light transmission and reduce ghosting‎.‎ Its internal focus system enables its compact design and keeps the front element from extending during focus‎.‎

As a manual focus‎,‎ manual aperture lens‎,‎ it offers a wide‎,‎ easy to grip focus ring and bright aperture‎,‎ distance and depth of field markings‎.‎ A removable petal‎-shaped lens hood is included‎.‎

An ultra wide‎-angle fisheye lens with a 12mm focal length on full‎-frame cameras and a 19.2mm equivalency when used on APS‎-C format cameras‎.‎ Its distorted perspective is useful for interiors‎,‎ landscapes‎,‎ group shots and many creative wide‎-angle applications‎.‎

• Extra low dispersion and aspherical lens elements reduce aberrations for sharp‎,‎ color‎-accurate imaging‎.‎
• Nano crystal coating and ultra multi‎-coating on the lens elements improves light transmission and reduces ghosting and flare‎.‎
• Manual focus lens with an internal focus system and wide‎,‎ rubberized focus ring‎.‎
• Manual aperture control with bright markings for aperture‎,‎ distance and depth of field‎.‎
• Sturdy metal barrel with removable petal‎-shaped lens hood‎.‎