When buying a used car, you check the mileage. When buying a used camera, you check the shutter count .
Let’s break down what it is, why it matters, and how to check it. Simply put, the shutter count (also called "actuations") is the number of photos your camera has taken in its lifetime. Every time you press the shutter button, the mechanical curtain inside your camera opens and closes to expose the sensor to light. That mechanism clicks once, and the counter goes up by one.
However — most cameras still count electronic actuations toward the shutter count. That means a Sony A7III used exclusively in silent mode might show 200,000 actuations but have a mechanical shutter that’s only fired 5,000 times. That camera has tons of life left.


