MEIKE N-AF1-A Macro Electronic Mount Auto Foucs Macro Metal Extension Tube Adapter for Nikon DSLR Camera D80 D90 D300 D300SD800 D3100 D3200 D5000 D5100 D5200 D7000 D7100 etc - 4332002097

• Compatible with :Nikon D80 D90 D300 D300S D600 D800 D3100D3200 D3200 D5000 D51000 D5200 D7000 D7100 etc camera and Nikon SLR and Nikkor AF, AF-S, D, G and VR lens series Cameras 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 Configuration:Engineering plastics material + metal bayonet,seven kinds of combinations, seven kinds of magnifications,Perfect for macro shooting Meike MK-N-AF1-A Tube diameter : ab.62mm. Tube Lengths: (1) 12mm.(2) 20mm.(3)36mm Macro extension tube can be used alone or in superimposed，When using the extension tubes alone (10mm or 20mm or 36mm ) or combination (10mm+20+36mm=66mm),support AF(Auto-Focus), AF Motor Protection: while using 3 rings together, we suggest you to use manual focus or Increase the lens focal lengths for it's a little bit difficult to auto-focus with 3 rings together, and also protecting your lens motor