Buy from Amazon.com : http://fave.co/191bWKf
Panasonic Lumix G H-H020AK 20mm F/1.7 II ASPH Lens for Panasonic/Olympus Micro Four Thirds
Product Description :
20mm focal length equivalent to 40mm on a 35mm film camera
F17 brightness for beautiful soft focus
Comprised of seven lenses in five groups
Used with Lumix G Micro System Cameras allows for use of the advanced contrast Auto Focus AF system