Compact, lightweight and economical, the WA-7X5X Wide-Angle Adapter Set is the industry standard. The set consists of two lenses: the .7x Wide-Angle and .5x Super Wide-Angle. The .7x attaches to the front of a Video zoom lens, increasing coverage by 30%. Adding the .5x to the .7x produces coverage nearly double that captured by the lens alone. (The .5x used alone increases coverage 30%.) For example, when attached to a lens that zooms to 9mm, the .7x Wide-Angle adapter shortens the effective focal length to 6.3mm. Adding the .5x Super Wide-Angle further alters the wide end of the lens to just 4.5mm, thus producing coverage nearly double that captured by the lens alone.