I bought this lens as a residual item two weeks ago and am impressed by the optical power. It is much better than the current 14-42mm which I have used with my neighbors for comparison. I bought in January also at Amazon, the Vario 14-42mm X and was a little entteuscht of the optical power. It is far more compact than the 14-45mm but I believe Optical something schlechter.Wer compactness not absolutely needs should after 14-45ziger lens grip as long as it ist.Der yet to procure price of the 14-45ziger (About 250 euros) is also considerably cheaper than that of the X Vario 14-42mm (about 360 euros).