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
In a Nutshell Bowers & Wilkins is a British speaker company that has been around for a long time, and they have built a tremendous reputation for quality products over the years. Their 700 series is one of their lines, which includes the 705 S2 stand-mounted...
In a Nutshell Wireless earbuds are currently a very popular product. They are useful for all sorts of things, including listening to music from smart phones without wires, but also for listening to phone calls, audio books, and gaming, all the while isolating the...
In a Nutshell Earthquake Sound makes amplifiers, speakers, and subwoofers. They are all very powerful, as per their titular company name. I have reviewed some of these earthquake-inclined items over the years, and they all met the standards I hold. The MiniMe DSP P12...
In a Nutshell Parasound has long been admired for their preamplifiers and power amplifiers. The JC 1+ power amplifier monoblock is their latest achievement, and it truly is an achievement to the highest degree. It has enough power (450 watts RMS into 8 Ohms) to drive...
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...