(From Konica Minolta lens literature) This ultra standard 4.3X zoom lens covers a range from 24mm wide angle to 105mm telephoto. Its widened focusing ring will not rotate while in AF. The lens ...

(From Nikon lens literature) Superior optical performance through use of IF technology and Aspheric lens element. Versatile lens for shooting landscapes, group shots and head and shoulder type ...

Secretary of the Air Force Frank Kendall flies in the X-62 VISTA in the skies above Edwards Air Force Base, California, May 2. (Air Force photo by Richard Gonzales) Secretary of the Air Force flew ...

No need to ‘say cheese’, as the Viltrox AF 56mm F1.7 delivers smiles all round. It has a portrait-friendly 84mm ‘effective’ focal length, is well-built, delivers good image quality with nice bokeh, ...

Examining long-term outcomes for people with atrial fibrillation (AF), the most common heart rhythm disorder, a new study found that 55% survived to 10 years. The researchers say AF needs to be ...

An updated expert consensus statement on catheter and surgical ablation of atrial fibrillation (AF) has been issued after a collaboration involving four cardiac electrophysiology societies.