Riflescopes are an essential part of any sharp shooter's gear. When it comes to selecting a riflescope, there's a lot to think about, like magnification and reticle type. First focal plane (FFP) reticles are becoming more popular in serious shooting due to their impressive measurement accuracy that doesn't change with magnification. Unlike second focal plane scopes where only the image magnifies, the reticle size grows alongside the target image with FFP scopes.
Understanding Second Focal Plane (SFP) Reticles
Second Focal Plane reticles are the more common type of adjustable magnification scopes. As magnification on an SFP scope is adjusted, only the target image's size changes, while the reticle remains constant. If an SFP scope features subtension lines, they are often accurate only at the optic’s highest magnification setting. SFP scopes are cost-effective to manufacture, making them popular choices for many shooters. However, utilizing reticle subtension lines for precise measurements, especially at lower magnifications, can be challenging, highlighting a limitation of these scopes.
What Is a First Focal Plane (FFP) Reticle?
In a First Focal Plane reticle, the reticle size increases with the target image as magnification changes. This design ensures that subtension lines on the reticle maintain their accuracy at all magnification settings, rendering them suitable for range estimation, windage, and elevation adjustments. Unlike SFP scopes, FFP reticles offer true subtension measurements throughout the entire magnification range. Although FFP scopes were historically pricier to manufacture, advancements in technology have made FFP scopes accessible to everyone, making FFP scopes more attractive to the average shooter as well as future precision marksmen.
How to Tell the Difference Between First and Second Focal Plane Reticles
The simplest way to tell the difference between first and second focal plane reticles is to look through the scope while adjusting the magnification. If the reticle changes size along with the target image, it's a first focal plane scope. If the reticle stays the same size regardless of magnification, it's a second focal plane scope. This difference is critical when using holdovers or subtension markings—FFP ensures those markings remain accurate at all magnification levels, while SFP is only accurate at a specific zoom level, usually the highest.
FFP in Action: The Sightmark Presidio 3-18x50 MR2
The demand for FFP scopes has surged within the shooting community as shooters recognize the benefits of true subtension measurements at various magnification levels. A notable example of a first focal plane riflescope is the Sightmark Presidio 3-18x50 MR2. This riflescope offers a versatile magnification range suited for close to mid-range shooting scenarios.
The first focal plane reticle within the Presidio 3-18x50 MR2 ensures consistent subtension measurements that remain accurate across the magnification spectrum. The scope is rugged and durable, crafted to withstand the recoil of a .338 Winchester Magnum, lending itself to a wide array of long-range shooting systems. In low-light shooting conditions, its battery-powered red reticle illumination enhances visibility against targets and makes it easier to see against dark backgrounds. The riflescope boasts fully multi-coated optics, optimizing light transmission, color fidelity, and clarity, contributing to superior image quality.
Durability and Design Built for Precision Shooters
The capped, low-profile turrets offer clear and audible clicks, coupled with aggressive exterior knurling. These features provide tactile feedback and bolster shooters' confidence during windage and elevation adjustments. Built-in zero stops and a single-piece 30mm tube constructed from aircraft-grade aluminum contribute to accuracy, durability, and ease of use.
Versatile Use Across Multiple Firearm Platforms
Designed for various firearm platforms, including ARs and bolt-action rifles, the riflescope accommodates diverse shooting preferences.
Final Thoughts on First vs. Second Focal Plane Reticles
The choice between first and second focal plane reticles presents distinct advantages and considerations. First focal plane reticles offer shooters precise subtension measurements and consistent accuracy across magnification settings. As technology advances, the accessibility and performance of first focal plane scopes continue to elevate the standards of precision shooting, appealing to both novice and seasoned marksmen alike.
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Frequently Asked Questions
What is the difference between First Focal Plane (FFP) and Second Focal Plane (SFP) reticles?
The main difference is that in an FFP reticle, the reticle size increases with the target image as magnification changes, while in an SFP reticle, only the target image's size changes, and the reticle remains constant.
How can you determine if a scope has a First Focal Plane or Second Focal Plane reticle?
To distinguish between FFP and SFP reticles, simply look through the scope while adjusting the magnification. If the reticle changes size along with the target image, it's an FFP scope. If the reticle remains the same size regardless of magnification, it's an SFP scope.
What are the advantages of using a First Focal Plane (FFP) reticle?
FFP reticles offer true subtension measurements at all magnification settings, making them ideal for range estimation, windage, and elevation adjustments. They provide consistent accuracy across the magnification range.
Are Second Focal Plane (SFP) scopes more cost-effective than First Focal Plane (FFP) scopes?
Yes, SFP scopes are generally more cost-effective to manufacture compared to FFP scopes. This affordability makes SFP scopes popular among many shooters, despite limitations in precise measurements at lower magnifications.
What is an example of a First Focal Plane riflescope available in the market?
The Sightmark Presidio 3-18x50 MR2 is a notable example of a first focal plane riflescope. It offers a versatile magnification range and consistent subtension measurements at various magnification levels.
