Meike MK-C-UP Electronic Automatic AF Auto Focus &Reverse macro extension tube For Canon EF/EF-S Lens

Key Features:
--Flexible cable connection
--Reverse and positive mount on lens,relize cacro photograpy,Easily!!
--Compatible all macro extension tubes and macro bellows almost
--Canon Mount, for all Canon EOS EF DSLR & canon EOS EF SLR
--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.
--This extension tube does not affect image quality as there is no optics inside.
--In comparison, a close up filters are often blamed for degrading image quality.
--Brand new, never used;
--Made of metal (not plastic);
--color : black
--Adjustable Length

Reverse adapter rings four pieces:
Diameter: 58mm / 67mm / 72mm / 77mm

Structure chart:
1.Adapter of body
2.Bayonet of body
3.E-transmission cable
4.Bayonet of lens
5.Stop pin of lens
6.Mounting indication of EF-S lens
7.Adapter of lens
8.Mounting indication of EF lens

Remarks
There are no electrical contacts in the extension tubes. Exposure has to be adjusted manually.
Aperture control is not available if you use a lens which does not allow you to manually adjust the aperture (without an aperture ring).
Macro extension tube is wonderful substitution to expensive macro lenses. It maintains original optical while transform the lens into a macro lens. It is far more desired then the add-on close-up lenses, which will alter the optical quality. The extension tube will work with all Canon EOS cameras, digital or film.

Compatible Digital Cameras:
Canon EOS 5D Mark III, 5D Mark II, 1Ds Mark [IV / III / II / I ], 1D Mark [III / II N/ II / I], 6D, 5D, 7D, 70D, 60D, 50D, 40D, 30D, 100D, 700D, 650D, 600D, 550D, 500D, 450D, 400D, 350D, 300D, 1100D, 1000D