Meike MK-S-AF3A Auto Focus 10mm+16mm Macro Extension Tube Ring for Sony E Mount

When using the extension tubes alone (10 mm or 16 mm) or combination (10mm+16mm=26mm), the focal length of lens should be greater than the length (10mm 16mm or 26mm ) of the tube. This extension tube is designed for Sony NEX mount lens to shoot at closer distance with higher magnification.