RF 85mm f/1.2L USM DS specially incorporates Canon's new optical technology - "DS (Defocus Smoothing) coating", which perfectly matches the f/1.2 ultra-large aperture, bringing extremely soft and beautiful bokeh that is different from traditional ones. It also incorporates a series of Canon's exquisite optics Technology includes Canon's unique BR lenses, glass-ground aspherical lenses, UD ultra-low dispersion lenses and ASC air sphere coating, giving the RF 85mm f/1.2L USM DS the highest optical performance among Canon's 85mm interchangeable lenses ever1. A must-have professional portrait lens for professional photographers and videographers who shoot portraits and weddings.