Brand-new blur — Canon EF 70-200mm f/4L IS

Read about the out-of-the-box optical problems with my brand-new Canon EF 70-200mm f/4L IS zoom in Brand-new Blur—Detecting Optical Problems. See also my May 4 blog entry on Canon 70-200 zooms.

Canon 70-200mm f/4L, 200mm @ f/4, blurred side