Have this lens via an adapter on a Pen E-P1. In the area of 40 to 120 mm, the image quality is comparable to the 14-42mm lens. The more you do is push the 150mm the greater the noise. It's not that you just under 150mm can no longer use but for larger prints you should then edit the images slightly.
For the price range, it is nevertheless a very good lens.
The 35mm equivalence is twice the said focal lengths.
