The Invisible Riders

EXIF Information extracted from file:
DateTimeOriginal: 2009:03:01 15:19:55
Camera Make: Canon
Camera Model: Canon EOS 40D
Exposure Time: 1/50.0 seconds
FNumber: 9.0
Exposure Program: Normal program
ExposureBiasValue: +1/3
MeteringMode: multi-segment
Flash: Flash did not fire, compulsory flash mode
FocalLength: 33.0 mm
Software: Adobe Photoshop CS3 Windows