Panasonic Lumix GX Vario PZ 45-175mm telephoto power zoom lens with motorized zoom So I think the image quality only between 75-150 mm Brenweite well. Also at the Panasonic GH2 Mussmann with the Stabilizer Shutter speeds of 1/200 sec under choose to obtain reasonably sharfe images. Handheld shooting with longer shutter speed are a gamble.