This filter makes the 1.7 / 20mm lens Panasonic more damage than he can help. He's not even worth the 13 euros. For lateral light during the day (with visor), in some cases even in normal shooting situations or at night in artificial light the filter fails completely, as light reflections and reflections arise. This is no fun. I unscrewed the filter and will strive to willy-nilly around a long-standing B & W filter. Do not buy this Hoya filters. This filter was (to me has no previous knowledge) about Amazon Deal Mania from England delivered. It took quite long until the goods have been delivered. So be careful.
