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Photos taken with a camera do not represent a single moment of time. Due to technological constraints these shots stand for some scene over a brief period of time. This time frame depends on the camera's shutter speed. In motion blur, any object moving with respect to the camera will look blurred or smeared along the direction of relative motion. Motion blur is frequently used to show a sense of speed. You can artificially achieve this effect in a usual scene using cameras with a slow shutter speed. Also Adobe Photoshop can be used for this purpose, though sometimes images may look unnatural and unprofessional. You may want to take a look at resources provided in the end of the article - they show how one can add the motion blur effect in photos.

(CBS) When 60 Minutes correspondent Scott Pelley and his crew went to China to record the black market dismantling of electronic waste, or "e-waste," the experience was almost as hazardous for the 60 Minutes team as working with the toxic material is for poor Chinese workers. Jumped by a gang of men overseeing the e-waste operations who tried to take the CBS team's cameras, Pelley's crew managed to escape and bring back footage of the hazardous activities. Pelley's investigation will be broadcast this Sunday, Nov. 9, at 7 p.m. ET/PT. The Chinese attackers were trying to protect a lucrative business of mining the e-waste-junked computers, televisions and other old electronic products-for valuable components, including gold. "They're afraid of being found out. This is smuggling. This is illegal," says Jim Puckett, founder of the Basel Action Network, a group working to stop the dumping of toxic materials in poor countries that certifies ethical e-waste recyclers in the United States. "A lot of people are turning a blind eye here. And if somebody makes enough noise, they're afraid this is all going to dry up."

Low light levels make night photography a challenging yet rewarding subject. The best results require specialized equipment, like SLR cameras, tripods, cable releases and flashguns. After sunset, the everyday world is magically transformed, and city buildings, fireworks, thunderstorms and the northern lights all become popular subjects. We present 60 amazing examples of night photography, photos, created by some hard-working and dedicated photographers. Take a look at their websites and portfolios, and you'll find some links to how-to articles about night photography at the bottom of the post.