It looks to me as though you didn't get the pan exactly right; for
maybe 80% of the time you were tracking the car perfectly, but at
the start and end of the pan you were off slightly.
Exposure was, I'd guess, somewhere around 1/60 of a second; in any
case the car hasn't moved far enough during exposure for it to be
a change in the angle subtended by the car.  And I think it looks
pretty clear that this is an artifact limited to the direction of
motion of the car - at the front you can see an echo of the red
decal, and at the rear you can see the white teardrops at the end
of the two white lines that come closest to the rear of the car.
Looking at other parts of the image (the airscoop on the hood,
and the rear of the roof) also shows only horizontal smearing.
It apears to be striclty horizontal, not radially out from the
centre of the image, so I doubt if it's reflection off a filter.

P.S.  Nice car.  Nice image.


On Fri, Nov 14, 2008 at 08:27:39PM -0500, PN Stenquist wrote:
> I don't know for certain what caused the front halo. But I have an idea, 
> and I'll tell you what I think after those who want to respond have had a 
> chance.
> Paul
> On Nov 14, 2008, at 8:22 PM, Ken Waller wrote:
>
>> Nicely captured PAul.
>>
>> What's that going on at the front end - looks like cloud build up?
>>
>> Kenneth Waller
>> http://www.tinyurl.com/272u2f
>>
>> ----- Original Message ----- From: "PN Stenquist" 
>> <[EMAIL PROTECTED]>
>> Subject: PESO: Dodge Challenger Race Package
>>
>>
>>> I shot this car for Dodge PR and Mopar Action magazine about a month  
>>> ago. The embargo has been lifted now, so I can show a pic. Another  
>>> frame from the shoot is going on the cover, so I'll hold off on  
>>> showing that.
>>> The car itself is quite remarkable. It's a basically stock Dodge   
>>> Challenger with a different third member and a slightly modified 6.1  
>>> liter version of their hemi engine. You can buy it from the factory 
>>> on  special order. It's engineered for drag racine. i photographed it 
>>>  during prototype testing, so I couldn't choose the time of day for  
>>> best light. This shot was in early afternoon. Performance? The car 
>>> ran  10.01 at 132 mph in a quarter mile. That's faster than any 
>>> exotic you  can buy today. Not bad for a basically off-the-shelf 
>>> piece of Detroit  iron.
>>> http://photo.net/photodb/photo?photo_id=8226674&size=lg
>>
>>
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