เลือกกล้องเล็งอย่างไร ให้เหมาะกับปืนของเรา

Published on April 27, 2020
Duration: 14:37

This guide, presented by Naaming Kotchanok, an expert from a specialized optics retailer, details how to select the appropriate rifle scope. It covers understanding scope specifications like magnification and objective lens diameter, differentiating focus adjustment types (Side Focus vs. Front Focus), and explaining the crucial differences between First Focal Plane (FFP) and Second Focal Plane (SFP) reticle systems. The video also touches upon red dot sights and prism scopes for specific applications.

Quick Summary

Choosing the right rifle scope involves understanding magnification (e.g., 3-18x), objective lens diameter (e.g., 50mm), and focus types like Side Focus (SF). Crucially, differentiate between First Focal Plane (FFP) reticles, which scale with magnification for consistent holdovers, and Second Focal Plane (SFP) reticles, which remain fixed in size.

Chapters

  1. 00:00Introduction to Rifle Scopes
  2. 00:20Understanding Scope Markings
  3. 01:24Focus Adjustment Types (SF vs. AO)
  4. 03:25Magnification and Adjustment Range
  5. 06:41SFP vs. FFP Systems
  6. 11:20Red Dots and Prism Scopes

Frequently Asked Questions

What do the numbers on a rifle scope box mean?

The numbers, like 3-18x50, indicate the magnification range and objective lens diameter. '3-18x' means the scope can zoom from 3x to 18x power. '50' refers to the 50mm diameter of the objective lens, which affects light gathering.

What is the difference between FFP and SFP rifle scopes?

FFP (First Focal Plane) reticles change size with magnification, keeping holdover points consistent. SFP (Second Focal Plane) reticles stay the same size, meaning holdover points are only accurate at one specific magnification.

Why is tube diameter important for rifle scopes?

A larger tube diameter, like 30mm compared to 25mm, typically allows for a greater internal adjustment range (MOA) for elevation and windage. This is crucial for zeroing at longer distances or compensating for bullet drop.

What are Side Focus (SF) and Front Focus scopes?

Side Focus scopes have an adjustment knob on the side for parallax correction, often considered more ergonomic. Front Focus, or Adjustable Objective (AO), has the adjustment ring on the objective bell, requiring the shooter to move their head or body to adjust.

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