How does this happen?

[fergpm]

The shutter was set for 8 sec. When I opened it there were 2 people standing where you see shadows. While the shutter was still open they both walked to the RIGHT until they were out of frame... Why is there no motion blur and the only thing you see is their outline? There is no "streaking" from where they stood to the right of the pic.. I'm a noob so there may be an explaination for this but I'm lost. There has been ZERO editing to this pic done.....

http://picasaweb.google.com/lh/photo/bSCDcCkiUC4cBd7cy3OyqA?feat=directlink

C&C is also welcome and encouraged.... be nice.. noob here HAHA

[jcothron]

I suspect they started walking soon after you opened the shutter. The effect of where they were standing kept the area behind them from being exposed the same. They were moving fast enough to not leave a trace to the right. Just my speculation.

Neat effect though.. :)

[fergpm]

Would have been neater if I had PLANNED it hehe.. but yeah.. I thought it was a cool pic... Just REALLY CONFUSED lol. Thanks!

[fergpm]

bump

[krb]

The shutter was set for 8 sec. When I opened it there were 2 people standing where you see shadows. While the shutter was still open they both walked to the RIGHT until they were out of frame... Why is there no motion blur and the only thing you see is their outline? There is no "streaking" from where they stood to the right of the pic.. This is a good example of how photography is capturing light. Because they were moving and had relatively little light shining on them they are not visible. If there had been a light shining on them as they walked you would have seen "streaking". If you had fired a flash on them as they walked then you would have seen them clearly in the exacty positions they were in when the flash fired with no streaking before or after.

[fergpm]

Thanks krb! That helps... time for me to do more reading on light exposure but that's a great start!