Top features: - High quality images with crisp optical glass elements - Quiet focusing with a circular aperture High quality images A bright maximum aperture of f/1.8 delivers great quality images in low light conditions, even when you're shooting handheld. The fixed focal length is perfect for a range of uses, including portraits, landscapes and travel snapshots. Crafted from high performance optical glass, there are six elements in five groups, which help to minimise distortion and aberrations, for crisp and sharp images. Quiet focusing Instead of a standard polygon-shaped lens aperture, this lens features a 7-blade circular aperture so that you can create a beautifully smooth defocused look to highlight the foreground. Significantly smoother and quieter than standard camera-coupled autofocus systems, the responsive Smooth Autofocus Motor (SAM) is built into the lens so that you can comfortably focus in on what matters.