The medium telephoto focal length provides a unique view and, when combined with the large aperture of f/1.8, it creates an impressive background separation The image stabilisation of up to 8 stops ensures you get sharp images even under challenging lighting conditions RF-Mount Lens/Full-Frame Format |Aperture Range: f/1.8 to f/22 |Nano USM AF System Optical Image Stabilizer | Ultra-Low Dispersion Elements | Air Sphere Coating Lens Function Buttons and Control Ring | Rounded 9-Blade Diaphragm