When it comes to the 3-18x50 SFIR shooting rifle scopes, there are some additional aspects to consider:
Focal Plane: SFIR scopes are typically referred to as First Focal Plane (FFP) scopes. In a first focal plane scope, the changes in magnification affect the size of the reticle within the scope. This means that whether you're using a low or high magnification, the reticle's size will change accordingly, allowing you to use the reticle for precise aiming at different magnification levels.
Optical Coatings: High-quality scopes often employ various optical coatings to enhance light transmission efficiency and image quality. These coatings help reduce reflections and scattering, resulting in a brighter and clearer view. Common types of optical coatings include anti-reflective coatings, multi-coatings, and low-dispersion coatings.
Reticle Options: Some 3-18x50 SFIR scopes may offer adjustable reticle options. They typically come with brightness adjustment features, allowing you to adjust the brightness of the reticle based on the environmental conditions. This can be useful for shooting in different lighting conditions, such as bright daylight or dim environments.
Durability and Waterproof/Fogproof Performance: Shooting rifle scopes generally need to be durable and offer waterproof and fogproof capabilities. This ensures that the internal components of the scope remain undamaged and that the lens does not fog up or accumulate moisture when used in adverse weather conditions.
These are some additional aspects to consider when it comes to the 3-18x50 SFIR shooting rifle scopes. Specific products may have different designs and features, so it's best to refer to the manufacturer's specifications and guides when selecting and using a scope.