Zeiss Touit 12mm f/2.8 Lens (Sony E-Mount) Innovative product design: The unmistakeable product design is based on an integrative concept and focuses on essential functional elements. Even the lens hood, typically an accessory, is seamlessly integrated into the overall design. Aspherical design: The aspherical lens design ensures consistent imaging performance throughout theentire focusing range as well as sharpness to the periphery of the image. The asphere's more complex surface profile can reduce or eliminate spherical Floating Elements Design: Thanks to the use of the latest floating element design principles, optical aberration effects in ZEISS lenses are reduced to a minimum throughout their entire focusing range. Excellent resolution and high contrast: Carl Zeiss T* anti-reflective coating: The optical elements of ZEISS lenses feature T* anti-reflective coating on all surfaces and an optical design that guarantees images of superior brilliance at all times, even in unfavourable lighting conditions.