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[OM] Re: Technical exposure question

Subject: [OM] Re: Technical exposure question
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Sat, 15 Jul 2006 22:52:37 -0400
Does nobody know the answer to this question?  Must be that just the 
gals know the answer and since they're not here...

Chuck Norcutt

Chuck Norcutt wrote:
> I just saw a very nice pano shot at sunset and including the sun.
> <http://www.pbase.com/garage_logician/image/62717458>
> The photographer's advice on creating such panos was to shoot in 
> aperture priority mode "to hold the DOF constant".  I can't argue with 
> holding the aperture constant but DOF I don't think would ever enter 
> serious consideration for the photo in question.
> 
> I would never have considered shooting the same pano in anything other 
> than manual mode and holding the exposure constant across all the 
> frames.  But I can't argue with his results, especially never having 
> shot a pano including a sunset.
> 
> Why does his technique work for him or is it an illusion?  Is the 
> exposure really not changing very much and the stitcher (PTGui) able to 
> accommodate the slight variation?  Or is it really necessary to vary the 
> exposure becuase the light is changing so fast with the sun setting on 
> the horizon?
> 
> Experienced sunset pano guys (and gals) please respond.
> 
> Chuck Norcutt


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