Olympus F.Zuiko Auto-S 38mm f1.8 Aperture: Open f1.8@‘S‘Μ‘œA’†‰›E‰E’[EΆ‰Ί’[‚ΜŠg‘ε‘œ‚̏‡‚Ι•\Ž¦ –˜Io‰ίθ’ˆΣ@Kenko PRO ND-4 FilterŽg—p