Contax Yashica 33mm (13+20mm) extension tube (USED)

This is an extension tube set (13mm and 20mm) for the Contax Yashica. The extension tube serves to increase the distance between the lens and the sensor. This allows the lens to focus closer and, therefore, increase magnification, so you can use almost any lens for close-up photography. As with a macro lens, the longer the focal length, the greater the working distance you can achieve.