 | September 08, 2011 Breaking news from America's top photo magazines |   | |  | Part one of our four-part expanded oral history of September 11, 2001, told by the photographers who documented it On a bright, clear morning in September, 2001, American Airlines Flight 11 was commandeered by terrorists and steered into the North Tower of Manhattan’s World Trade Center. The initial impact occurred at 8:46 a.m. Within minutes, photographers were making their way toward Manhattan’s financial district. With only a dim notion of what was going on, they pushed past throngs of escaping workers and into the annals of history. READ MORE >> |
| | A second plane crashes, chaos blooms, photographers press closer | | Towers crumble, priorities shift, the world changes in an instant | | Photogs dust off, shed tears, evade checkpoints and make pictures |
 Be the first to hear about new stuff on PopPhoto.com by subscribing to our revamped RSS feed! | | | TECH SUPPORT SuperDuper Macro Q. Canon claims a 1:5 maximum subject magnification for its 65mm f/2.8 MP-E Macro lens, while Sigma states 1:1 for its 70mm f/2.8 EX DG Macro. Given that they both focus to approximately the same minimum distance, wouldn’t they both achieve essentially the same magnification?
A. The two don’t actually have the same close-focusing distance. Sigma measures this distance from the front element, while Canon uses the standard methodology, which is to measure distance from the focal plane.
But there is another issue here that has confused a fair number of our readers: the MP-E Canon’s maximum magnification ratio is 5:1, not 1:5. That means five times life size: an object 1/5 of an inch long would project an image of 1 inch on the film or sensor. That’s macro! Canon isn’t exaggerating by much when it states, “you can fill a 35mm frame with a grain of rice.” Long-grain rice, maybe. |
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