The new MOUNT CONVERTER MC-11 allows you to use your SIGMA SA mount and SIGMA EOS mount interchangeable lenses with the Sony E-mount camera body.
Until now, the market has seen the introduction of many methods for using lenses from one camera system with a body from a different system. In the digital age, however, camera systems have become much more complex, and it is challenging to create a mount converter that aligns both the mechanics and software of the lens and body. Creating a converter that matches lenses for current DSLRs to bodies for mirrorless interchangeable-lens camera systems is even more challenging. Now the market demands a converter that goes beyond simply aligning the flange back distance to retaining full functionality.

 * This model is also availbale in Sony E mount that doesn require MC-11 

When used with a camera body that is compatible with Fast Hybrid AF, AF-S mode the MC-11 delivers extremely fast and smooth autofocus performance. With other camera bodies, contrast detection AF it offers very high-precision autofocusing.