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Wombat · 08-23-2011, 08:41 PM

The photographer's vehicle was moving at the time the picture was taken. See how the truck&trailer appear slanted, with elliptical wheels? That's because many digital cameras have an apperture which is a horizontal slit which sweeps across the light-detecting chip: in this case we can see that the slit swept from top to bottom, because the lower part of the picture appears further "behind" the moving photographer's vehicle than the upper part of the picture. You can get interesting distortion effects if you use that kind of camera to take a picture while swinging it around in big circles at arm's length.

08-23-2011, 08:41 PM	#7
Wombat (marsupial with backward-facing pouch) Join Date: Oct 2004 Location: Canberra Posts: 251	The photographer's vehicle was moving at the time the picture was taken. See how the truck&trailer appear slanted, with elliptical wheels? That's because many digital cameras have an apperture which is a horizontal slit which sweeps across the light-detecting chip: in this case we can see that the slit swept from top to bottom, because the lower part of the picture appears further "behind" the moving photographer's vehicle than the upper part of the picture. You can get interesting distortion effects if you use that kind of camera to take a picture while swinging it around in big circles at arm's length. __________________ If you don't do it properly, you'll get to the pub sooner.