This is the Canon EF 50mm F1.8 mark 2 lens It is my favourite lens. This picture was also taken with one. I purchased this for my wife's birthday. You can buy this for less than £100, worth every penny. On a full frame camera (Canon 5D mark 3) 50mm is roughly what the human eye sees. On a crop sensor camera like mine (Canon 60D) its about 75mm which is portrait lens territory. It gives amazing bokeh that is where the background is blurred and the object is in focus.