The Olympus TCON-17X (1.7x) Telephoto Conversion Lens is especially designed for the Olympus XZ-1 camera. It increases the focal length of the lens by 1.7x, but without changing the aperture. With this adapter, the XZ-1 achieves the 35mm equivalent of a 190mm telephoto lens, but with the very large (for a telephoto) aperture of f/2.5, greatly increasing the possibilities of shooting in low-light without camera shake. The CLA-12 Conversion Lens Adapter is required for operation of this telephoto conversion lens.
For the XZ-1 camera
Increases focal length by 1.7x
Does not affect the maximum aperture of f/2.5--it remains bright for great telephoto shots without camera shake