ND Filters and Long Exposures with Olympus cameras - Olympus Passion
ND Clip Filter Series for Olympus Micro Four Thirds Cameras - STC Optics
Picked an Olympus OM-1 Up with 3 Lenses, 20 Filters, An Automatic Winder and a Flash for £30. Updated the Leather to Ivory : r/AnalogCommunity
37mm Yellow Blue Streak Lens Filter Special Effects For Olympus Epl10 Epl9 Epl8 Em10 Om-d E-m10 Mark Iv Iii Ii W/ 14-42mm Lens - Camera Filters - AliExpress
Microscopy Filter Cubes with Pre-Installed Fluorescence Filters
Amazon.com : Olympus PRF-D58PRO Lens Protect Filter for M.ZUIKO DIGITAL ED 14-150mm f4.0-5.6, M.ZUIKO DIGITAL ED 40-150mm f4.0-5.6 and M.ZUIKO DIGITAL ED 75-300mm f4.8-6.7 (26096),Black : Camera Lens Filters : Electronics
Amazon.com : 37mm ND Variable Neutral Density Filter for Olympus 14-42mm f/3.5-5.6 II ED Lens : Electronics