365/366 Photo a Day Blog | Shadow x3

Shadow x3 : August 04, 2009

Image Data
File Name: 50D_51187
Model: Canon EOS 50D
Lens: Canon EF-S 10-22mm F/3.5-4.5 USM
Date: 08.02.09 4:21pm
Focal Length: 10mm (16mm)
Shutter: 1/250 s
F-Stop: F7.1
ISO: 100
Program: Aperture priority
Metering Mode: Evaluative
Flash: Off
Focus Mode: One shot AF

Shadow x3

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08.04.2009
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Shadow lengths change dramatically throughout the day. The length of a shadow cast on the ground is proportional to the cotangent of the sun's elevation angle � its angle ? relative to the horizon. Near sunrise and sunset, when ?=0� and cot(?) is infinite, shadows can be extremely long. If the sun passes directly overhead, then ? = 90�, cot(?)=0, and shadows are cast directly underneath objects.

Comments (0)

jwen 08.04.09 9:23pm
ew! i don't like having my shadow in the sludge. D:

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