Top features: - Fast aperture ideal for portraiture- Enhanced optical performance with 13 lens elements in 9 groups - Straightforward focusing with smooth and quiet performance Ideal for portraiture Compact and lightweight, the Sony DT 50 mm f/1.8 SAM is a great option for portraiture, and will fit easily inside your camera bag.The maximum aperture of f/1.8 is ideal for lower-light settings and lets you capture handheld shots without compromising on quality.Enhanced optical performanceFor refined optical performance, the SAL50F18 has 13 high performance lens elements in 9 groups that are made from optical glass, so that distortion is minimised and every image is crisp and sharp.Straightforward focusing With a built-in Smooth Autofocus Motor, the SAL50F18 is built to be smoother and quieter than conventional camera-coupled focusing systems. Instead of a standard polygon shaped aperture, the DT 50 mm features a 7-blade circular aperture for more natural, smooth defocusing.