Fujifilm GF55mmF1.7 R WRLens compatibility Fujifilm X Mount 50mm focal length A versatile focal length for capturing crystal clear shots throughout a variety of shooting situations. f 1. 2 maximum aperture Wide open aperture performs exceptionally well in low light settings. Provides remarkable depth of field control, so you can softly blur the background and draw attention to your subject. Construction 13 elements in 8 groups, with 2 aspherical and 1 ED lens elements