Prioritizing bokeh, the Canon RF 85mm f/1.2L USM DS is a unique portrait-length prime, characterized by its flattering focal length, exceptionally bright maximum aperture, and advanced optical design. Differentiating itself from Canon's other RF 85mm f/1.2 lens, this version features a DS (Defocus Smoothing) coating that helps to soften and smooth the bokeh quality when working at wider aperture settings, making it particularly suitable for shallow depth of field applications.

Beyond the bokeh-optimized design, the optical layout of this lens incorporates a Blue Spectrum Refractive Optics element; a specially developed element that helps to nearly eliminate chromatic aberrations and color fringing for notable clarity and color accuracy. In addition to this, an ultra-low dispersion element and one aspherical element are also featured to further control various aberrations and distortion for great sharpness and resolution. Individual elements also feature an Air Sphere Coating to suppress flare and ghosting for high contrast and color fidelity when working in bright and backlit conditions.

Complementing the imaging capabilities is an apt ring-type Ultrasonic Motor, which delivers fast, near-silent autofocus and full-time manual focus override. A unique Control Ring is also integrated into the lens design for intuitive control over exposure settings from the lens itself.