Commlite Lens Mount Adapter CM-EF-NEX B (Canon EF Mount Lens to Sony E-Mount Converter) with Electronic Contact

Autofocus function, built-in handshake function, gold-plated pin is precisely adjusted by the mount adapter, aperture design of the full frame adapter, fully support Sony full-frame camera a7/a7r Compatible with Sigma dc 17-70/2.8-4 dc OS hsm Sigma dc 30/1.4 dc hsm ; It is NOT compatible with Sigma Art 24-105/Canon ef 24-70/2.8L USM II/Canon ef-S 18-135/3.5-5.6 IS Compatible with Tamron Lens: Tamron sp 24-70/2.8 di vc USD Tamron sp 70-200/2.8 di vc Canon Zoom Lens: ef 8-15/4L usm fisheye/ef 17-40/4L usm/ef/70-200/2.8 L IS usm II/ef 70-200/4L usm/ef 70-200/4L ISusef 20-35/2.8 l (Ver. 18) 22222-ef 2-ef 22-5ef 5/4-5 .6 usm ef-S 18-55/3.5-5.6 IS ef 28-80/3.5-5.6 II ef 28-90/4-5.6 III Compatible with Canon Fixed Focus Lens: ef 100/2.8 usm macro ef 135/2L usm ef 200/2.8L II usm ef 300/2.8L IS usm extender ef 1.4 x III ef 14/2.8L ii usm ef 24/1.4L ii usm ef 24/2.8 usm ef 35/1.4L usm ef 50/1.2 l