Irix 15mm F2.4 'Blackstone' and 'Firefly' lenses for DSLRs to launch this spring

Switzerland-based company TH Swiss has introduced the Irix 15mm F2.4 lens for DSLR cameras. The manual focus lens features a 'neutrino' coating that helps keep ghosting, color aberration and flare under control. The 15mm F2.4 is designed for full-frame cameras. It offers a minimum focusing distance of 28cm/11in, and the focus ring provides a 'click' tactile feedback when focused to infinity. The lens is composed of 15 elements in 11 groups. Three of the elements have a high refractive index (HRI...