
Review Summary
2018-09-20T14:15:59
These extension tubes are reasonably well made and fit correctly. They are very slightly rough when mounting, but nothing troublesome. The 12mm is quite usable, but the 16mm only works with the shorter (22mm and 18-55mm) EOS M lenses; It is simply too long for the 55-200mm lens, not achieving focus even with the front element right on the subject. Mounting both tubes results in not being able to focus either. Manual focus must be used, as for whatever reason the autofocus doesn't operate with an extension tube mounted, not that autofocus is of much use for macro anyway. The good news is, these are metal tubes, the only other ones I have found being plastic, so overall I am satisfied with these.
Robert W.
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Diameter of each tube: Approx. 61.5mm
Approximatly 56g
846431088251
The Pro Optic Auto Extension Tube Set contains two tubes in different lengths, 10mm and 16mm, which can be used both individually as well as together. With well built electronic contacts and smooth transmitting signals the Pro Optic extension tubes support automatic focusing, automatic exposure, etc, enabling you to use all shooting modes of the camera, while no exposure compensation is required.