Decent build quality, does what it's supposed to do.
Joseph, B&H Photo
4 May 2015
Excerpt: The best thing about this extension tube is the fact that you still get full control over your lens through the camera controls, unlike the cheaper tubes. Why would I get this over a dedicated Macro Lens? It's cheap and it doesn't take up much room in your camera bag.
Pros: Consistent Output, Durable, Easily Interchangeable, Rugged, Strong Construction
Excerpt: The body of this extension tube is made of plastic, not metal. I have a set of Kenko extension tubes. Major differences between this OEM Canon tube and the Kenko version: (1) Bayonet that attaches to the camera is thicker on the Canon (2) Noticeably less slop from the Canon tube when affixed to the...
8 II and its working great, i was concerned about focusing speed
Jose J. Correa F, Amazon
10 January 2015
Summary: Just out the box, did a first test with my 50mm 1.8 II and its working great, i was concerned about focusing speed, but i would say its the same that the lens would have if its attached alone, i uploaded a photo (argentinean coin) focused about 2 inches distance.
Excerpt: This is the only answer for me. I have a cheaper brand and it will not be going on my L lenses. Trusting a loose fitting tube on a $$$ lens is scary. Canon makes quality and it shows on this item.
Pros: Durable, Easily Interchangeable, Rugged, Strong Construction