The panasonic f12 asph leica dg nocticron ois lens for the micro four thirds system is a fast portrait lens with maximum f12 aperture and optical image stabilisation the aperture ring on the lens barrel allows direct intuitive control over aperture settings so you dont have to take your eye off the subject and potentially miss the shot optical image stabilisation effectively compensates for any camera shake ensuring your photos are crisp and clear even in badly lit environments