Introduction The new Canon EF 40mm f/2.8 lens is the second one that Canon has equipped with its new Stepping Motor Technology (STM) system that allows that allows not just fingertip editing, but also ...

We have over a million object records online, and we are adding to this all the time. Our records are never finished. Sometimes we discover new information that changes what we know about an object, ...

With three side-firing weapons, a 25mm Gatling gun, a 40mm Bofors cannon, and a 105mm howitzer, it's easy to see why it got its name. (03:07) Explore Subscribe Newsletters Content Licensing Our Pa ...

Medium-caliber cannon — the 20-mm to 40-mm cannon found on infantry fighting vehicles, air-defense vehicles, and other platforms around the world — have been wreaking damage against infantry ...