OpenEXR 中的停止和步骤之间的区别?

Difference between a stop and a step in OpenEXR?

OpenEXR 中的停止和步进有什么区别?步骤看起来像是停止的子单位,但除此之外我不确定它们之间的关系。

来自Technical Introduction

The range of normalized 16-bit floating-point numbers can represent thirty stops of information with 1024 steps per stop. We have eighteen and a half stops above middle gray, and eleven and a half below. Denormalized numbers provide an additional ten stops at the low end, with gradually decreasing precision.