Canon 135mm f2.5 telephoto lens. It is extremely well built and super sharp in the Canon breach lock mount. It can easily be used on any mirrorless digital camera with an inexpensive adapter available from B&H or others. Why spend 10 times more money for a Sony E-Mount, Lumix, Fuji or any other lens for your digitial, when this film lens is most likely sharper and better built? $50.
