Precision Macro Photography: This Canon 100mm macro lens with a maximum aperture of f/2.8 is designed for close-up photography, allowing you to capture intricate details with exceptional sharpness and clarity. Canon EF Mount Compatibility: Engineered for Canon EF mount SLR cameras, this prime lens seamlessly integrates with your existing Canon camera system. Versatile Focusing Capabilities: Featuring a 3-group floating system and a minimum focusing distance of 1 foot, this lens excels at both macro and portrait photography, delivering outstanding performance across various shooting scenarios. Reliable Autofocus Performance: The ultra-sonic monitor ensures rapid and accurate autofocusing at all distances, while the full-time manual focus override allows you to fine-tune your shots with ease. Optimal Contrast and Image Quality: The secondary diaphragm blocks stray light at f/2.8, enhancing contrast and image quality, while the Super Spectra coating minimizes flare and ghosting for superior optical performance.