| Field of View | Field of View refers to the range that can be seen when using optical equipment. It represents the size of the horizontal and vertical angles visible from the device |
| First（front） Focal Plane (FFP) | First Focal Plane (FFP) refers to the positioning of the reticle in the front focal plane of an optical device. It ensures that the reticle's size remains consistent with the target at all magnification levels, providing accurate aiming, holdover, and ranging capabilities, especially for long-range shooting applications. |
