Vizelex Polar Throttle Lens Mount Adapter - Canon Eos (Ef/Ef-S) D/Slr To Micro Four Thirds (Mft, M4/3) Mirrorless Camera Body With Built-In Circular Polarizing Filter

The build quality is Ok, however be aware that you cannot control aperture with this adapter and with some lenses like the 85 1.2 you cannot even focus manually. Also the lens crops the focal length to about 1.3x so your 16-35 will become a 24-70. The adapter is going back to amazon for a different one.-