Canon has announced the price and availability of the RF 85mm F1.2L USM. Designed for the mirrorless RF mount cameras, the new lens features a new optical design with aspherical and UD elements and is only the second lens, after the EF 35mm F1.4L II USM to feature Canon’s proprietary BR (Blue Spectrum optics) optics. Canon is rightfully cagey about the BR technology but it is thought to be a balsam-type material sandwiched between two elements. It is meant to reduce longitudinal (axial) chromatic aberration, which appears in front of and behind the imaging plane in high-speed lenses like this and is thus difficult to remove post-capture. Intriguingly, Canon makes no…