OLYMPUS 8mm f1.8 150mm Wide Filter Holder Set This is a set of filter holder outer frame that can use 150mm wide square filters, and holder adapter for use with OLYMPUS 8mm f1.8PRO. We also have requests for OLYMPUS hard users, and decided to develop products. Vignetting will occur when used in 0.3 inch (8 mm) but due to the "In-Body Fish Eye Correction" feature, you can shoot without vignetting by narrowing the angle of view.