The lens gives your images an extraordinary depth at a focal length of 50 mm, allowing you to highlight the details that matter most to you. Tilt the lens to set the focus point anywhere within the image area, thereby emphasizing specific details in your landscape shots or portraits. With a brightness of f/2.5 and a smooth, adjustable depth of field that transitions into blur, you can create indescribable images. The Sweet 50 optic is part of the Lensbaby Optic Swap System.