Trap Focus

Challenge #20 in the Technology Enabling Art series. Hosted by ProfHankD.
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Trap focus is a camera feature that allows you to manually focus and have the camera delay firing the shutter until you have pressed AND something is in focus. Originally intended to capture photos of the wedding party as they walk down the aisle, it works for many sports if you pre-focus where the action is headed. With a manual-focus lens, you can also use it to confirm focus by holding down the shutter button while you focus -- it will take the image as soon as focus is achieved. Submit your trap focus images here.
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Submitted: Tuesday, 3rd January, 2012 18:49 (GMT)
Taken: Tuesday, 14th July, 2009
Focal length: 105 mm
Shutter speed: 1/160 sec
Aperture: F4.5
ISO: 400
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