The right tool for shooting situations that require both a wider angle of view and full zooming capabilities. This professional addon lens produces crisp, high resolution images with low distortion, and superior contrast edge to edge. The .8X Wide Angle Converter attaches to the front of the lens for 20% more coverage when set to wide angle, telephoto or anywhere in between. It is a full zoom through converter that comes in our popular Bayonet Mount that attaches with a twist to the front of your lens. No threading required.