This is the third rarely used lens. I only use it along with the Panasonic 12-32G/3.5-5.6 and the Olympus 9-18/4.0. It’s the Olympus 40-150/4.0-5.6, an ultra-light long zoom with a plastic mount. I bought it used, it was ultra-cheap and … it’s fine. Much better than hauling around the big 40-150/2.8.