You can use a step up / down ring to match your existing lens. Life Through Lens. Does have a bit of very light and thin fungus hairs at the back, but they are only light and not that noticeable and shouldn’t effect the performance.
Olympus WCON -P01 Wide Converter For M Zuiko 14-42MM F/3.5-5.6 II R Lens
Olympus C-8080 Wide Zoom Digital Camera Boxed Manuals Battery Good Condition CCD
Olympus M.Zuiko Digital 14-42mm f/3.5-5.6 II R w/11mm Wide Converter & UV Filter
Olympus Wide Converter Wideconverter WCON-P01 Lens **Very Good** Condition
7artisans 25mm F0.95 Wide Angle Large Aperture Manual Focus Fixed Lens APS-C for Olympus Panasonic MFT M4/3 Mirrorless Cameras Like Panasonic GH3 GH4 GF1 GM1 GM5 Olympus E-M1 E-M5 E-M10
Fotga Lens Adapter Converter for Nikon F AI AIS Lens to M4/3 Micro Four Thirds MFT Mirrorless Cameras for Panasonic GH5 GH6 GF6 G100 GF10 GX9 GX85 Olympus OM-1 E-M10 III E-P7 - PL8/9