Product Description Introducing Sigma's popular mount converter "MC-11 (for CANON EF-SONY E)". This is an essential item for maximizing the use of your Canon EF mount lenses on Sony E-mount bodies. Unlike a simple adapter, it maintains fast and highly accurate AF performance not only with Sigma lenses but also with many EF mount lenses. It also supports advanced features such as in-body image stabilization and Eye AF, allowing for free lens selection across different mounts. The design minimizes the impact on image quality, such as anti-reflection treatment inside the lens barrel, a feature inherited from Sigma's Art line. This is the perfect converter for those considering a system change or for those who want to enjoy old lenses and masterpieces with the latest mirrorless cameras. The condition is good, but please be aware that this is a used item, so those who are sensitive to such things should take caution. The accessories are all that are shown in the photos.