stunning! 51

I wanted to try without taking too much risk, and the demonstration is brilliant. Sure, it does not transform all your L series optics macro objectives are obtained but downright astonishing magnifications reports with the only price to pay (almost) a light loss. If you macro flash, this concern is not one because you control the flash (or flash for the wealthy).

An excellent compromise that works wonders on my 7D and all my EF lenses, the price is really very good material. On a 250 tried out of curiosity, I make the point with 3 rings within one centimeter of the front lens! the magnification ratio becomes truly amazing!

A reasonable purchase for any serious amateur wanting to practice without ruining the macro, preferably to advise studding which have a diameter which will not suit all objectives, and generate chromatic aberration if not worse. The longer-rings are mounted on all optical, singly or combined.

Note that the blister received was labeled "Phottix", manufacturer of accessories pretty serious while practicing aggressive pricing.