Seagull Telephoto lenses for the Twin Lens Reflex Cameras. They are a set of 2 lenses in pouches. You simply screw a lens onto each lens (viewing and taking), and then shoot as you normally would. Since you are placing a telephoto lens on each of the camera's original lenses, you will get exactly what you see. These lenses increase the 75mm original lenses 1.5x to make them 112.5mm. The pouches have loops on the backs so that you can attach them to a camera strap for easy carrying.