Audio Video Consulting
Dr. Johnson offers offers consulting services on the design and user friendliness of audio and video consumer electronics.
John E. Johnson, Jr. holds four university degrees in the bio-science fields, and has published numerous scientific books, along with dozens of scientific articles on biomedical research topics as well as imaging technology. He was the Founder and Editor-in-Chief of two medical/scientific journals for 20 years.
John holds several patents, including one on high resolution image analysis and one on a surgical instrument. Dr. Johnson has been affiliated with NASA, The National Institutes of Health, The Johns Hopkins University, Stanford Research Institute, and The University of California at Berkeley.
Educator and Professional Speaker
Dr. Johnson offers informative presentations on a wide range of audio/video topics. He specializes in making highly technical topics understandable and enjoyable to the participants.
Audio/Video Product Analysis and Reviews
Dr. Johnson offers in-depth analysis of products at any stage of development, from design to completion. His analysis is both objective and subjective in nature.
Software Analysis and Improvement (User Friendliness)
Dr. Johnson offers his recommendations on making software user friendly and inclusive of additional functions.
Photographic Consultation and Services
Dr. Johnson offers design and functional recommendations on photographic equipment and software.
Editorial and Technical Article Services
Dr. Johnson has written many editorials and technical articles over several decades, as well as edited numerous books.
Percussion Reviews and Services
Dr. Johnson was the first person to perform spectrum analyses on cymbals.
Consumer Electronics Today
Product Review – Sigma 16 mm f/1.4 DC DN Lens and Sigma 30 mm f/2.8 DN Lens for Sony APS-C E-Mount Mirrorless Cameras
16 mm Lens Specifications Focal Length: 16 mm (35 mm Equivalent Focal Length: 24 mm) Maximum Aperture: f/1.4 Minimum Aperture: f/16 Lens Mount: Sony E Mount Sensor Format: APS-C Angle of View: 83.2° Maximum Magnification: 0.10101 x Minimum Focus Distance: 9.84" / 25...read more
Product Review – Sigma SD Quattro H Digital Camera with Three-Layered Foveon Sensor and 24 – 35 mm Lens
Introduction As some of you know, photography is one of my two hobby passions (the other being high-end audio). I have been into photography since I was about 5 years old, when my mother gave me a Brownie Kodak camera. I have owned many different cameras over...read more
In 1953, 20th Century Fox changed the way we saw movies at the theater by introducing widescreen at an aspect ratio (width divided by height) of 2.35:1. It was called CinemaScope. Up until that point, movies were shot at the Academy ratio of 1.375:1. Several other...read more
I have written more than 400 articles about audio and video products over the years. I have learned a lot about what makes a product great, i.e., World Class. So, I am preparing this article to discuss some of those products that I have reviewed, but also, some that I...read more
In reading hi-fi equipment reviews in various magazines, I have been struck at the words the writers use to describe the sound quality. Here is a sampling: “Sheen, Subtle Woven Texture, Foundation, Invariably Musical, Breathy, Liquidity, Tension, Natural Rawness,...read more