Extracto: After all the great reviews for this lens I expected much more. I compared it to my Hoya close -lenses. The Canon 100mm f2.8 IS was only slightly more sharp. What really surprised me was how dark it was for a f2.8 lens. In my comparison test, the Hoya close-up lens was much brighter.
Extracto: I only took a dozen of so test shots with this lens. Auto-focus basically sounded like a muffled steel trash can rolling down the driveway. I have already returned it [...]. I'll probably get a 180mm instead.