he Canon EF 85mm f 1.2L II USM Lens for Canon DSLR Cameras is ideal for portrait photography. A maximum aperture of f1.2 makes it possible to use fast shutter speeds, even when the ambient light is on the dimmer side. The lens even enables precise control over focusing, thereby allowing an extremely shallow depth of field, making it perfect for portrait imaging. Integration with E TTL II flash system, which is sold separately, with your compatible Canon DSLR camera ensures optimal flash metering. Physical Features Key Features EF 85mm f/1.2L II USM Lens for Canon DSLR Cameras Fast Maximum Aperture This Canon camera lens has a maximum aperture of f1.2, which enables you to use fast shutter speeds even in low light conditions. This lens also allows extremely shallow depth of field by enabling fine control over focusing, which is perfect for creative effects in portrait photography. Captures Smooth Background Blur The virtually circular aperture diaphragm of this Canon EF lens gives a softer, more uniform feel to out of focus regions. You can click sharp foreground objects with this lens that stand out against the smooth, blurred background. Quiet and Fast Autofocus Operation The ring type USM of this Canon DSLR camera lens employs ultrasonic frequency vibrations to achieve extremely rapid autofocus without making much noise. The lens s optimized AF algorithms and high speed CPU further enhance the AF speed. Super Spectra Coating The Super Spectra coatings of this lens ensure enhanced contrast along with accurate color balance. It also helps reduce ghosting and flares that are a result of internal reflections on the camera's sensor. Integrates with E TTL II Flash Metering This advanced lens can help ensure optimal flash metering. The lens can do so by passing the distance information to your compatible EOS camera's E TTL II flash system.