How Black & White and Color Photographic Film is Manufactured, How Color Film Works, and Why Some Movies are Still Shot on Film

John E. Johnson, Jr.January 12, 2026

Introduction The manufacture of photographic film is one of the most precise and delicate industrial processes ever developed, a fusion of chemistry, physics...

TechnicalTechnical Reviews

The Art and Science of Designing High-End Audio Cables

John E. Johnson, Jr.December 4, 2025

Designing high-end audio cables combines art andscience, requiring a thorough knowledge of electrical engineering, materials, and acoustics.

TechnicalTechnical Reviews

Understanding the Measurement of Noise When Looking at an FFT-Produced Spectrum

David A. Rich, Ph.D.November 13, 2025

This article provides an overview of the information shown in the spectrum plots in Secrets reviews of components with DACs. Among these...

TechnicalTechnical Reviews

Development of Modern Anamorphic (Widescreen) Lenses from the Original “Cinemascope” Lenses of the 1950s

John E. Johnson, Jr.August 14, 2025

The development of anamorphic lenses marked a pivotal moment in the evolution of cinematic storytelling, significantly enhancing the...

TechnicalTechnical Reviews

How Does a Cathode Follower in a Tube Audio Circuit Work?

John E. Johnson, Jr.July 24, 2025

A cathode follower is a vacuum tube circuit commonly used in audio applications for impedance matching, buffering, and signal conditioning.

TechnicalTechnical Reviews

An Explanation of the Gamma Curve and Delta E in Video Displays and Projectors.

John E. Johnson, Jr.February 8, 2024

Your computer display, flat-panel home theater display, or home theater projector display has many controls to manage the image...

TechnicalTechnical Reviews

Determining Room Acoustics is a Six-step Process.

Norman VarneyJanuary 30, 2024

Have you wondered what is required to determine acoustic room treatments in order to get the most out of your system and have the best...

TechnicalTechnical Reviews

DCI-P3 Color – What It Means in Today’s Ultra HD World

Chris EberleSeptember 23, 2019

By now, in September of 2019, even AV enthusiasts new to the hobby will know about Ultra HD. It’s been around for several years now, starting with the...

Technical Reviews