ProOptic Pro-Optic Blue Center Spot (SP7) Filter

The periphery of the picture is rendered a delicate, soft focus effect while the central image is sharply focused. Isolates the main subject, held sharp in the clear center, while diffusing a distracting background. Ideal for portrait or product applications.

For shorter focal lengths 20-24 or 28 mm as well as for wide-angle zooms (24-50 mm, 28-85 mm, 35- 135 mm), System "P" is strongly recommended. It is available in diameters ranging from 48 to 82 mm and eliminates vignetting (dark edges).