Videos tagged with Optical Physics

This video debunks the common claim of 'parallax-free' optics. It explains that any lens system involving light refraction will inherently have some parallax. The degree of parallax increases with higher magnification. While manufacturers can reduce parallax, it cannot be entirely eliminated. Parallax is defined as the apparent shift of a target relative to the reticle when the observer's eye position changes.

This video, presented by Ian McCollum of Forgotten Weapons, provides an expert-level overview of how red dot sights work, tracing their lineage from early WWI collimating optics to modern LED-based systems. It details the principles behind collimation and examines key historical examples like the Nydar scope, Armson OEG, Weaver Quick Point, and Aimpoint Electronic Mark 2, highlighting their technological advancements and limitations.

This episode of Moondog TMI Live features a discussion with Ilia, the Dark Lord of Optics, covering various topics including AI, cybersecurity, firearm cleaning products, shooting challenges, and optical engineering. Key takeaways include insights into the functionality and privacy concerns of AI tools, the effectiveness of ZKT gun wipes for cleaning, and a detailed discussion on optical physics and engineering principles with a focus on camera sensor design and the challenges of working within Japanese corporate structures. The episode also touches on personal immigration stories and educational experiences.

This guide details the installation and functional principles of a thermal clip-on optic, specifically the InfiRay model, used with platforms like the SIG MCX Spear-LT. It emphasizes proper placement in front of traditional optics due to thermal sensor limitations with glass and the necessity of rear magnification for image scaling and eye relief. The information is presented with high authority, drawing on technical knowledge of thermal sensor physics and optical mounting solutions.

This video demonstrates a tactical technique for rapid target acquisition on a .50 BMG sniper rifle, specifically the Accuracy International AX-50. Expert instructor Gunghis explains how mounting a secondary red dot optic like the Trijicon RMR on a primary magnified scope (Leupold Mark 5HD) overcomes the narrow field of view inherent in high magnification. This setup allows for faster target transitions by using the red dot to quickly find the target, then dropping the eye to the main scope for precise engagement without manual magnification adjustments.

This guide details how to critically assess red dot sights, using the Trijicon MRO HD as a case study. It covers evaluating optical design flaws like parallax and magnification issues in older models, understanding improvements in newer versions, and considering factors like reticle reflections, battery life, and night vision performance. The analysis also extends to comparing different optic types, such as LPVOs, and evaluating overall value against market alternatives. The insights provided are based on an analytical and objective assessment, drawing on detailed technical evidence and comparative testing.

This comprehensive review of the Primary Arms 1-6X Optic, presented with high authority by Garand Thumb, details its performance over a 5,000-round test. It highlights the optic's budget-friendly nature ($289 MSRP), lightweight design, and the practical ACSS reticle for ranging. While acknowledging limitations like edge distortion and bright light illumination washout, the review positions it as a capable option for varminting, hunting, and 3-Gun competitions, emphasizing that training is paramount over gear.

This guide explains how to eliminate parallax error in rifle scopes, a critical step for precision shooting. Parallax occurs when the reticle and target image are not on the same focal plane, causing the point of aim to shift with head movement. The video, featuring Tim O'Connor from Leupold, details the process of adjusting the diopter for reticle focus and then using the adjustable objective or side focus to align the target image with the reticle, ensuring accuracy at specific distances.