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
Technology guides
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...
Extra aspherical: Advanced technology guide
The latest lenses from Canon and Nikon use aspherical lenses made from extra-low dispersion glass
Ergos: Advanced technology guide
Bob Newman looks at the use of the word 'ergos' among camera buffs
Scene-recognition mode: What is it and how does it work?
In this article we look at the scene-recognition mode, providing a guide to what it is for and how it...
Backside illumination: Advanced technology guide
Professor Bob Newman considers Sony’s new full-frame, backside-illuminated sensor for the Alpha 7R Mark II
Skylight filter: What is it and how does it work?
In this article we look at the skylight filter, providing a guide to what it is for and how it...
Near Field Communications: What is this feature and how does it work?
In this article we look at Near Field Communications, providing a guide to what it is for and how it...