Please note that the lens works perfectly, however, the smooth to tight ring no longer tightens up. The Canon EF 100-400mm f/4.5-5.6L IS USM Zoom Lens is a high-quality telephoto lens designed for Canon EF mount cameras. With a maximum aperture of f/4.5-5.6, this lens is ideal for capturing distant subjects with clarity and precision. Featuring both auto and manual focus options, along with image stabilization technology, photographers can achieve sharp images with ease. Made of durable aluminium and weighing 1380g, this lens is a reliable choice for Canon users looking to expand their photography capabilities.
