Introductions:
AF extension tube set can transform customer's Canon 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 13/21/31mm, 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 with most Canon lenses, given there is enough light to activate the cameras AF system properly
Specifications:
Compatible with all for Canon DSLR cameras
Materials: Plastic+Metal
Advanced design
Smooth surface
Color:Black

Features:
MK-C-AF1-A Standard version extension tube set
Professional extension tube set, design for Canon EOS DSLR
Support AF
Configuration:Engineering plastics material + metal bayonet, perfect match with Canon EOS DSLR camera and lens.
Length :13mm+21mm+31mm, seven kinds of combination, support seven kinds of magnification.

Package Includes:
Adapter ring for Canon x1
User Manual x 1
Original Package x 1