Tiffen's new 39mm UV, CP and Black Pro-Mist filters are perfect match for two of Fujifilm's prime lenses: Digital Photography Review
Tiffen 39mm UV Protector Filter 39UVP B&H Photo Video
B+W Basic UV-Filter MRC 39mm - BW1100131 | Manfrotto UK
Buy B + W 39mm UV Protection Filter (010) for Camera Lens - Xtra Slim Mount (XS-PRO), MRC Nano, 16 Layers Multi-Resistant and Nano Coating, Photography Filter, 39 mm, Clear Protector Online