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XCSOURCE? Macro AF Auto Focus Extension Tube Set 13mm 21mm 31mm for Canon DSLR SLR 5D 6D 60D
This Macro Extension Tube Set includes 3 extension tubes13mm21mm31mm
You may mount the tubes between lens and camera body to get your choice of macro ranges There are totally 8 combinations
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
Designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure with Canon DSLR Body