Metabones Sony E Mount T Smart Adapter (Mark IV) to ef CANON

Autofocus is available only on A7RII. on other SONY cameras, AF contrast detection with an EF mount lens is disappointingly slow and unsuitable for everyone, but static themes,
Even in A7RII, long telephoto lenses hunt more frequently and autofocus performance progressively deteriorates as the focal length gets longer.
In A7RII, AF points near the center always work well, but those at the edges and corners can lose effectiveness when using a fast lens or telephoto lens.
A7RII only supports AF contrast detection during video recording. This means video AF speed can be unsatisfactory.