Lens externally first time looked good. But tests immediately brought a sobering: sharp images no matter what the panel! An exact test revealed a nasty front focus. This then has the blur fully explained. The IS does not help much. Compared to other Canon lenses (such EF300mm 4.0) where you can pleasantly noted the IS already in the viewfinder (wobbles are much gentler), here at the EF100mm Macro very little help: it wobbles almost exactly like without IS. I have a "Monday Model" caught? Anyway, I wanted to risk a replacement, perhaps again with tests and anger. That is why back. As always, thanks to Amazon for the speedy withdrawal. But I would prefer a perfect product ...
