Machined from copper: All Extension Tubes are machined from copper, gives you durable and steady experience even with heavy telephoto.
Incredible matte surface: treatment Aluminum alloy sealed inside. Also uses fantastic Aluminum oxidation technology to achieve high-end matte surface treatment. Reduces unnecessary light to a level of state of art.
Professional and compact design: Features a super and elegant design almost the same with Nikon lenses, and made of special material to keep high quality.
Built-in gilded electric pins: Aputure has built-in electric pins plus sealed with gold to ensure accurate TTL metering and AF functions. While most low cost extension tubes can't realize the functions well due to lacking of electric pins.
Flexible combinations: Consists 12 mm, 20mm and 36mm tubes, which can be used individually or in combinations for 7 different possibilities to bring you unbelievable creative freedom.
Macro extension tubes 3 Ring Auto Focus Nikon mount are three extension tubes ideal for macro. The tubes are mounted very easily between the camera and the lens. Their goal este increase the distance of closest focusing. The extension tubes have an AF (Auto Focus). They are fully compatible with the Nikon lenses AF AFS and therefore keeps the autofocus and all the automation of the case and lens. The set includes extensions 3 tubes (12 mm, 20 mm and 36 mm) may be used separately or in combination to obtain an elongation and thus a desired magnification ratio. Combinations Report No 1:0.20 magnification ~ ~ 1:0.48 1:0.34 1:0.34 1 2 1 2 1:0.48 1:0.62 1:0.62 ~ ~ ~ 1:0.90 1:0.76 1:0.76 3 1 3 1 : 0.90 ~ ~ 1:1.04 1:1.04 1:1.18 2 3 1 2 3 1:1.18 1:1.32 ~ Features: Bayonet Metal Tubes extensions 12 mm, 20 mm and 36 mm Mount: Nikon Package Contents 1x 12mm tube (Tube 1) 1x 20mm tube (Tube 2) 1x 36mm tube (Tube 3) 1x front and rear cap 1x English manual