NIKON ZFC General Troubleshooting
System Nominal
The perceived lag is an inherent mechanical characteristic of the mirrorless focal-plane shutter sequence. Because the sensor must be open for the EVF/LCD, the mechanical shutter must perform a 'reset' by closing before it can begin an exposure. This extra physical movement (Open-to-Closed then Closed-to-Open) creates a delay that is not present in Electronic Front-Curtain Shutter (EFCS) or fully Electronic shutter modes.
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