I just received Canon EF 100mm F2.8L USM Macro Lens from B&H. The lens looks and feels solid, heaveir than Canon EF 100mm f/2.8 USM Macro. The EF 100mm f/2.8L Macro IS USM is the first Image Stabilized macro lens in Canon EOS range. The new Hybrid IS system features up to 4-stop correction, compensating for the effects of camera shake, during normal shooting. Low friction ceramic balls support the moving elements, which allows for the amazingly smooth movement – needed when compensating for camera shake during macro shooting. Hybrid IS corrects shift movement – problematic when shooting up close -as well as angular movement providing photographers with the benefit of up to 2 stops at 1.0x magnification. As part of the L-series the lens features dust and water resistant seals.
I will post a detailed personal review of this extraordinary lens in a day or two.