 | January 12, 2012 Breaking news from America's top photo magazines |   | |  | Cameras, lenses, bags, calibrators, software, protective cases, memory cards, and more The annual Consumer Electronics Show is a massive shrine to new gear and gadgets, which makes it the perfect place for us. We've been walking the floor and checking out the latest stuff for a couple of days now, selecting the best and most intriguing new stuff to appear in this gallery. We'll be adding to it until they kick us out and padlock the doors. READ MORE >> |
| | Fujifilm's marketing director Casey Baker answers your questions about their new APS-C ILC | | CES gives us a look into the electronic entrails of some new gear | | Catch up on everything we covered at this year's tradeshow |
 Be the first to hear about new stuff on PopPhoto.com by subscribing to our revamped RSS feed! | | | TECH SUPPORT Understanding Light Q. What is flash falloff? A. The beam from a flash unit is cone-shaped. Photograph a relatively close object and most, if not all, of the light cone will cover it. But as you move the flash farther away, a smaller portion of the light cone hits the subject, as more of the light sprays wide of it. At a great enough distance, the flash's light becomes imperceptible to the eye as well as to a sensor or film. Imagine trying to water a small plant at a great distance with a garden hose set to a wide spray—you may pump out gallons per minute, but very little of it will actually hit the plant. That's the bad news. The worse news: Flash falls off as the square of the distance. In plain lingo, this means that if you move twice as far away from your subject, you get only one-quarter the illumination on the subject. Triple your distance and you get only one-ninth the light. Read more about flash falloff |
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