Vello EXT-SFED Deluxe Auto Focus Extension Tube Set for Sony E-Mount Lenses

TechWalls presents unboxing and testing video of the Vello EXT-SFED Deluxe Auto Focus Extension Tube Set for Sony E-Mount Lenses. Buy on Amazon: http://amzn.to/28HjXyS Full review on http://www.techwalls.com/