This Olympus Zuiko lens is a great addition to any photography enthusiast's collection. With a maximum aperture of f/2.8 and a focal length of 40mm, this lens is perfect for capturing stunning images. It is designed for Leica cameras and features manual focus, making it ideal for those who prefer to have complete control over their shots. The lens has a mount of L39 and is compatible with filters sized at 21.5mm. This lens is perfect for standard use and is a must-have for any photographer seeking high-quality results.