Gallery: American Photo's Images of the Year and More!

Gallery: American Photo's Images of the Year and More!	View this email online

	December 16, 2010 Breaking news from America's top photo magazines From the Forums: What are your thoughts on ring flash adapters like the Ray Flash or Orbis Ring Flash? Our readers share their thoughts. Join and Contribute!

	American Photo: 2010 Images of the Year Photographs that will amaze you with artistry and astound you with originality. Gallery: John Isaac, the Passion of a U.N. Photographer How this former photojournalist went from shooting the dark side of humanity to capturing the radiance of wildlife. Nikon ED 300mm F/2 Hits eBay, Bidding Starts at $15,000 A veteran piece of rare glass makes its way to the online auction block. Tested: Olympus Zuiko Digital ED14-35mm f/2 SWD This four thirds lens sets a speed record. Photo of the Day Think your photos have what it takes to be named Photo of the Day? Then upload your best shots to our Flickr page. See the whole gallery here TECH SUPPORT Crop Confusion Q. Your crop factor article in October 2010 was interesting, but I’m missing something. In November you said the Canon PowerShot S95 has a sensor size of 1/1.7 inch. Obviously that is not height/width. Is it a fraction that gives some dimension? A. Manufacturers use a weird size designation for the sensors in most compact cameras. The 1/1.7-inch designation is indeed a fraction: It is the measurement of the diagonal of the sensor chip multiplied by about 1.5 to 1.6X. (The reason for this goes back to—seriously—glass electronic tubes.) The diameter of a 1/1.7-inch sensor works out to about 9.5mm, relatively huge as compact sensors go. Where it gets really confusing is in comparing sizes of these small sensors, since a 1/2.5-inch chip (common in superzooms and small compacts) is much smaller than a 1/1.7-incher—about 4.3x5.8mm versus about 5.7x7.6mm. We promise from now on to give actual dimensions of sensor chips, not those wacky inch thingies.

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