Hello, been lurking on this forum for a while now, but finally registered! I have a G3 with the 14-42mm and 45-200mm lenses and really enjoy using them. I wanted something faster for photographing indoors, but can't afford the Panasonic 20mm 1.7. So I decided to look for a legacy lens instead and thought that the Konica 40mm looked good. So I bought a Konica 40mm 1.8 on eBay.co.uk, which was described as in "Excellent condition" and "No scratches or fungus, blades are snappy and free from oil residue." However, when I look at the lens, I think there might be a couple of problems: at wide apertures (which is why I bought the lens) the aperture blades don't make a very circular aperture (it's at F2.8 in the attached photo) - is this normal for this lens? there appear to be some wispy artefacts inside the lens - could this be fungus? Many thanks for any advice. Thanks.