FFP (First Focal Plane) stands for "First Focal Plane" and refers to the placement of the reticle in a scope. In the case where the reticle is located in the first focal plane, its size changes in accordance with adjustments to the scope's magnification. This means that as you zoom in, the reticle grows, and as you zoom out, the reticle decreases in proportion to the image.

In practical terms, when you zoom in using a FFP scope, the reticle size changes on the target. This feature allows for precise distance estimation and shot correction regardless of the scope's magnification.

Compared to SFP (Second Focal Plane), where the reticle size remains constant, FFP has the advantage that the user can leverage the benefits of precise adjustments and estimations on the target at any magnification.

Each of these approaches has its advantages and disadvantages, and the choice between them depends on personal preferences and the intended use of the scope.

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