Samyang SLR Interchangeable Lens 70-210mm F4.0-5.6 Multi-Coated, Macro, Zoom is a manual focus lens compatible with Canon cameras. It has a maximum aperture of f/4.0-5.6 and a focal length range of 70-210mm, making it suitable for zoom and macro photography. The lens is multi-coated to reduce glare and improve image quality.