AE-L/AF-L lock button and efficient sealing design. | Double dial snobs and multiple buttons which are convenient for operation. | Support screen lock function, Support lock display mode. | Can use two batteries | Wireless channel which.

Meike MK-N-AF3C-Blue Tube diameter : Macro extension tube can be used alone or in superimposed，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. | Compatible with :Nikoncamera mirrorless cameras J1 J2 J3 V1 V2 | Take close-up of small objects, insects , flowers or more item small and easy to carry, Nice construction and simple to use. | It enables you to use all shooting modes of the camera, exposure compensation is required. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures) | The extension tube is designed for Nikon N-Mount lens mounting at a higher magnification at a closer distance

Meike MK-N-AF3C-RED Tube diameter : Macro extension tube can be used alone or in superimposed，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. | Compatible with :Nikon 1 camera mirrorless cameras J1 J2 J3 V1 V2 | Take close-up of small objects, insects , flowers or more item small and easy to carry, Nice construction and simple to use | It enables you to use all shooting modes of the camera, exposure compensation is required. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures) | The extension tube is designed for Nikon N-Mount lens mounting at a higher magnification at a closer distance

Voking VK-C-ET2 Tube diameter : ab.65mm. Tube Lengths: 12mm 21mm 31mm,seven kinds of combinations, seven kinds of magnifications,Perfect for macro shooting | Macro extension tube can be used alone or in superimposed，When using the extension tubes alone (13mm or 23mm or 31mm ) or combination (13mm or 23mm or 31mm),support AF(Auto-Focus) | Works with all EOS SLR cameras | 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 | 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