HAIOU SA-99 75mm f3.5 Aperture: Open f3.5@‘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