Lens Construction
(Groups/Elements)                        4 groups/ 4 elements
Coating                                         Multiple layer
Maximum Magnification                2X the mag ratio of original lens
Length                                           1.0in. (26mm)
Maximum Barrel Diameter             ?2.6in. (66.7mm)
Accessory Included                       Case
Available Mounts                           Canon, Minolta, Nikon &  Pentax

Note: All our AF tele-converters and AF extension tubes for
Canon EOS are also compatible with Canon EOS "IX" APS
camera system.