Metabones released the new EF-E Smart Adapter MARK IV and EF-E Speed Booster ULTRA firmware V0.45. Download it here for Windows (Click here) and Mac (Click here).
Those are the improvements:
- A7RII PDAF speed improvement for some wide angle, normal and medium telephoto lenses on A7RII
- Fixed an intermittent overexposure issue on A7RII
- Fixed an intermittent start-up issue on A7S
- Stability improvement