SFP means "Second Focal Plane" or "druhá ohnisková rovina" in Czech and is a designation for the placement of the reticle in a scope. When the reticle is placed in the second focal plane, it means that its size remains unchanged when changing the magnification of the scope. This means that the reticle stays the same size, even as you adjust the magnification level.

In practice, this can mean that when you zoom in using a SFP scope, the reticle does not change its size on the target. This can be advantageous when shooting at different distances, as the reticle does not obscure more of the target at higher magnification.

In contrast, scopes with FFP (First Focal Plane) have a reticle size that changes in line with adjustments to magnification.

Each of these variants 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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