Auto Extension Tube
Macro extension tubes do auto focus?
Hey I was thinking of buying macro extension tubes for my Nikon D3000. The lens used with tubes of 35 mm is 1.8. I wonder if the extension tubes autofocus or manual focus if I have to? These are the pipes. 
Thanks.
When you are buying an extension tube, rail also looking focus. A great help in the photograph closely. More often than not to resort to manual focus with tubes.
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Kenko DG Auto Extension Tube Set for the Canon EOS AF Mount
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