Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

Density describes how closely packed the particles are in a solid, liquid or gas. There is little difference between the density of a liquid and its corresponding solid (eg water and ice). This is ...

The best neutral density filter will help you capture creative long exposures to blur movement in landscapes – even in the middle of a bright summer's day With neutral density filters, or ND filters, ...