Invention Convention Photos | Columbus Invention Convention Photos | 2007 Columbus Invention Convention | Columbus Invention Convention

Columbus Invention Convention
¥ In grades K-2 the first place winner is Tessa Perry a 2nd grader from Carlisle Elementary School (Delaware City School District) for her invention ÒCoffee Filter Stay-openerÓ, a coffee filter that stays put.

相机制造商:Nikon Corporation
相机型号:NIKON D70
原拍摄时间:2007:05:19 17:36:55
曝光时间:1/50 秒
光圈:f/2.8
曝光补偿:-0.33 EV
测光模式:模式
闪光灯:闪光灯, 自动模式, 回射闪光未侦测
焦距:50 mm
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