06-18-2015, 07:20 PM
Quote:A 24mm lens for test is hardly the most challenging scenario, and its performance at the longer focal lengths is where it matters most. In particular, shall have to keep an eye open as to how it performs with USM vs. STM lenses.There is only one "fast" FF STM lens, the 24-104mm f3.5-5.6.... The 40mm is of the slow variety with gears.