Features: 
<br />This Macro Extension Tube Set includes 2 extension tubes:10mm,16mm. 
<br />You may mount the tubes between lens and camera body to get your choice of macro ranges. There are totally 3 combinations. 
<br />It moves the lens farther from the film or digital sensor. The farther away the lens is, the closer the focus, the greater the magnification. 
<br />This extension tube does not affect image quality as there is no optics inside. 
<br />It is with 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. 
<br />Material: plastic 
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<br />Suitable For All Sony NEX E mount Camera. (Also compatible with full frame camera, such as A7, A7R, A7S) 
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<br />Package Includes: 
<br />1 x Macro Extension Tube Set For Sony NEX