MK-N-AF1-A Standard version extension tube set
Professional extension tube set, design for Nikon DSLR.
Support AF(Auto-Focus), AF Motor Protection: while using 3 rings together, we suggest you to use manual focus for it's a little bit difficult to auto-focus with 3 rings together, and also protecting your lens motor.
Configuration:Engineering plastics material + metal bayonet, perfect suits for Nikon DSLR camera and lens.
Length:12mm+20mm+36mm, seven kinds of combinations, seven kinds of magnifications

Introductions:
AF extension tube set can transform for Nikon lens into DSLR body
Moves lens from film or digital sensor
Closer focus is greater magnification
Extension tube does not affect image quality as there is no optics inside
In comparison, close up filter is often blamed for degrading quality of image
This tube set contains three piece tubes of various lengths such as 12/20/36mm, which can be used individually or in any combination to obtain the desired magnification, total 7 various lengths
These extension tubes are designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure for most Nikon lenses, given there is enough light to activate the cameras AF system properly

Specifications:
for most Nikon lenses and for Nikon DSLRS (such as for Nikon D7100, D5300, D5200, D3200, D800, D800E, D5100, D7000, D3100, D300S, D5000, D700, D300, etc.)
Materials: Plastic+Metal
Advanced design
Smooth surface
Color:Black

Package List:
1 * Macro Extension Tube Set
1 * User Manual (English)