Description: This set has 2 extension tubes - 10mm and 16mm. You may mount the tubes between lens and camera body to get your choice of macro ranges . Use this set will not demote the optical quality of your lens with auto focusing. It moves the lens farther from the film or digital sensor. The farther away the lens is, the closer the focusing, the greater the magnification. This extension tube does not affect image quality as there is no optics inside. What are you waiting for? Get this set and take amazing photos. Features: Designed to enable a lens to focusing closer than its normal set minimum focusing distance enabling you to convert almost any lens into a macro lens while maintaining its original optical quality. Does not affect image quality as there is no optics inside. They are mounted in between the camera body and lens to create more distance between the lens and film plane. The greater the length of the extension tube, the closer the lens can focusing. Contains 2pcs tubes in different length 10mm/16mm, which can be used in combination or individually to obtain the different magnification. Has electronic contacts, which make it support automatic focusing, automatic exposure, etc. It enables you to use all shooting modes of the camera, exposure compensation is required. Suitable for Micro M4/3 camera and lens. Specification: Material: Metal + Plastic Color: Black Width: 10mm / 0.39", 16mm / 0.63" Diameter: approx. 61.5mm / 2.42" Package Weight: approx. 72g Quantity: 2pcs Package Includes: 2 x Extension Tubes