Small Hole - Filters 60 to 68 are recommended from Standard lenses to Tele lenses.

Sharpness of the hole’s edges will depend on the aperture : the smaller will be the aperture, the sharper will the hole’s edges be, and vice-versa. S

ame effect as 060 with surroundings in Violet

Cokin P064 Centre Spot Violet filter fromCameraWorld