Thank you for viewing. ● Optics Dust has entered. While no mold is visible, there is some cloudiness and dirt. I believe this will have little effect on the image quality unless in extreme backlight. ● Function The AF (autofocus) functions without issue. The focusing helicoid, aperture ring, and automatic aperture operate smoothly. ● Appearance There are minor scratches and dirt from use. This listing is for the lens body only. This is a very old, used item. Please consider this before purchasing. #SunaCamera