At my OM-D-10 arising 15mm by Kropp factor. The picture is displayed full frame, but distorted mad. It can be used only in open countryside. Compared to a 7-14mm Panasonic there is a difference like night and day - it remains somehow a Fisheye. Processing is top and who accepts the beschriebnen of mine properties is at the right place at a great price. Not suitable for me.