Mcoplus Extnp Auto Focus Macro Extension Tube Set for Nikon AF AF-S DX FX SLR Cameras The AF Extension Tube Set can transform your Lens into a Macro Lens.This is used by attaching between camera body and lens of the 35mm single-lens reflex camera. It couples perfectly with the camera's automatic diaphragm Tube diameter : ab.69mm. Tube Lengths: (1) 12mm.(2) 20mm.(3)36mm This extension tube consists of 5 parts: 12mm tube, 20mm tube, 36mm tube, Front Cap, Rear Cap. Package includes: Auto Focus Macro Extension Tube Set x1, English User Manual x1 Material: Brass Chromed and ABS(Acrylonitrile Butadiene Styrene), color : black Compatible with: Nikon SLR and Nikkor AF, AF-S, D, G and VR lens series For Macro photography For use with Nikon AF AF-S DX FX SLR Cameras rear caps prevent the dust Auto Focus extension tube Producted by Material of Brass Chromed and ABS(Acrylonitrile Butadiene Styrene) contains three tubes of different length:12 mm, 20 mm and 36 mm,can be used individually or Combined to Macro shooting The AF Extension Tube Set can transform your Lens into a Macro Lens It moves the lens from the film or digital sensor. The closer the focus is, the greater the magnification The extension tube does not affect image quality as there is no optics inside. In comparison, a close up filter is often blamed for degrading the quality of image This is used by attaching between camera body and lens of the 35mm single-lens reflex camera.It comes as a set of tube of different lengths which singly or in combination makes it usable in 7 different lengths It couples perfectly with the camera&#039;s automatic diaphragm. With cameras of TTL, AE(Through-the-lens,Atuomatic Exposure) type it gives perfect coupling except when combined with electronic flash AE unit