When manually focused, the Sony A7R IV's shutter lag dropped to 0.124 second with EFCS, and 0.194 second without. With the fully electronic shutter, manual focus shutter lag was 0.327 second.

Packed with a high-res 61-megapixel full-frame image sensor, the Sony A7R Mark IV is, without a doubt, a beast of a camera -- the highest resolution full-frame camera currently on the market.