On Wed, 26 Feb 2003 19:11:42 -0500, Doug Franklin wrote:

> On Wed, 26 Feb 2003 11:10:42 -0500, Stephen Moore wrote:
> 
> > At first glance it seems a straightforward pan shot, done
> > with a fairly wide lens -- but on closer examination the 
> > blur doesn't appear to be uniform across the entire photo.
> 
> That's just a natural result of panning while the car is going through
> a turn, but you're standing still.  The photog is keeping his sights on
> the driver's helmet, for example, and it stays sharp, but the rest of
> the car rotates around its CG/roll center while the shutter is open.

I should also have noted that even if the car isn't turning itself, it
is turning with respect to the camera.  If it wasn't you wouldn't be
panning. :-)  That relative motion also has this effect.

TTYL, DougF KG4LMZ


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