When it comes to the 3-15x50 SFIR Shooting Gun Scopes, here are some further information:
The SFIR reticle, or Second Focal Plane Illuminated Reticle, has certain characteristics that differentiate it from other types of reticles. Let's compare it to a few common reticle types:
First Focal Plane (FFP) Reticle: In an FFP reticle, the reticle's size changes in proportion to the magnification level. This means that as you increase the magnification, the reticle appears larger, and as you decrease the magnification, the reticle appears smaller. This can be advantageous for range estimation and holdover corrections, as the reticle's subtensions remain consistent at all magnification levels. In contrast, the SFIR reticle maintains the same size regardless of magnification.
Non-Illuminated Reticle: A non-illuminated reticle is a standard reticle without any illumination. It relies solely on ambient light for visibility. In low-light conditions, a non-illuminated reticle may become difficult to see clearly. The SFIR reticle, on the other hand, offers illumination, allowing the shooter to enhance the visibility of the reticle and aim more precisely in low-light environments.
Mil-Dot Reticle: The Mil-Dot reticle is a popular reticle type that features dots or hash marks spaced at regular intervals along the crosshairs. These dots allow for range estimation and bullet drop compensation. The SFIR reticle may or may not have mil-dot markings, depending on the specific design. However, the key difference lies in the illumination feature of the SFIR reticle, which can aid visibility and target acquisition in challenging lighting conditions.