Canon Filter Adapter FA-DC67A;

Canon%27s FA%2DDC67A is a lens filter adapter which attaches directly to the lens barrel ring of the Canon Powershot SX30 IS and provides the ability to attach 67mm filter thread filters%2E The Canon FA%2DDC67A is designed to move along with the lens while zooming%2C preventing vignetting at the wide angle end of the zoom and providing filter coverage throughout the full optical zoom range of the lens%2E