Bob Newman on why some quality issues cannot be foreseen
Technology guides
Reflex mirror: what is it and how does it work?
In this article we look at the reflex mirror, providing a guide to what it is for and how it works
TTL flash system: what is it and how does it work?
In this article we look at TTL flash system, providing a guide to what it is for and how it works
Power of sensors: advanced technology guide
Professor Bob Newman explores the performance-enhancing power of sensors
Advanced technology guide: Industrial design
What messages are manufacturers sending out with the visual styling of their new models?
Advanced technology guide: Nikon’s D camera sensors
Professor Bob Newman looks at Nikon’s new D cameras and asks, ‘Who made the sensors?’
Mirror box: Advanced technology guide
Nikon has developed a mirror box from engineering plastic for its ‘second-tier’ D810 model
Stills from 4k video: Advanced technology guide
Bob Newman looks at the resolution that’s possible from a still image taken with 4K video
Full-frame sensors: Advanced technology guide
Bob Newman looks at the advantages of the larger full-frame sensor
Understanding Memory Cards
Getting yourself in a memory card muddle and not sure which card to buy? We look at memory card speeds and the fastest memory card on the market to help…
Viewfinder dioptre correction adjustment: what is it and how does it work?
In this article we look at viewfinder dioptre correction adjustment, providing a guide to what it is for and how it works
Lens design and AF: Advanced technology guide
There are some interesting lens design insights to be found by studying a Tamron lens patent
Sony raw files: advanced technology guide
Professor Bob Newman looks at Sony’s new uncompressed raw file format
The camera name game: Advanced technology guide
The brand name that appears on your lens may not be the original manufacturer
Foveon X3 sensor: What is it and how does it work?
In this article we look at the Foveon X3 sensor, providing a guide to what it is for and how it works
Prime lenses: Advanced technology guide
The latest prime lenses don’t compromise on image quality, but there is a trade-off
Diffractive lens: What is it and how does it work?
In this article we look at diffractive lens, providing a guide to what it is for and how it works
Colour correction: Advanced technology guide
Bob Newman looks at why lenses are colour corrected because of dispersion
Mirror lens: What is it and how does it work?
In this article we look at the mirror lens, providing a guide to what it is for and how it works
Extra aspherical: Advanced technology guide
The latest lenses from Canon and Nikon use aspherical lenses made from extra-low dispersion glass