Auto Focus Macro Extension Tube 10mm+16mm Set for Nikon 1 mount J1 J2 J3 V1 Cam _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ This automaticmacro Extension Tube Set isdesigned to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. _x000D_ _x000D_ _x000D_ _x000D_ The DG II extension tubes have no optics. They are mounted in between the camera body and lens to create more distance between the lens and film plane. By moving the lens father away from the film or CCD sensor in the camera, the lens is forced to focus much closer than normal. The greater the length of the extension tube, the closer the lens can focus. _x000D_ _x000D_ _x000D_ _x000D_ Itcomes as a set (10mm+16mm). It contains 2pcs tubes in different lengths 10mm/16mm, which can be used in combination or individually to obtain the different magnification.This Tube 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. _x000D_ _x000D_ _x000D_ Specification: _x000D_ _x000D_ _x000D_ Diameter of the tubes: Approx. 61.5mm _x000D_ _x000D_ _x000D_ _x000D_ Tube length: 10mm,16mm _x000D_ _x000D_ _x000D_ _x000D_ Material: Built in Metal Bayonet & Plastic Body _x000D_ _x000D_ _x000D_ _x000D_ Suitable for: _x000D_ _x000D_ _x000D_ _x000D_ for Nikon 1 Mount Camera and lens, such as J1 J2 V1... _x000D_ _x000D_ _x000D_ _x000D_ Package Including: _x000D_ _x000D_ _x000D_ _x000D_ 1 x Electronic macro extension tube set (10mm+16mm) _x000D_ _x000D_ _x000D_ _x000D_