I have the fader used in the 58mm version with the Olympus OM-D and the M.Zuiko lenses 12-50 (with adapter ring), 40-150 and 70-300, as well as at various fixed focal lengths and am surprised by the good quality. Of course, one must consider that here 2 polarizing filters are cascaded and the alignment of the front filter has an effect on the polarization effects (reflections, sky blue). Strong buy recommendation