[HDR-photo] Starting out...

[Uwe Steinmueller]

>- in 2006 i used an automatic panohead solution 

What head do you use today?

Uwe
--- Bernhard Vogl <bvogl at gmx.at> wrote:

> Thanks to Mark for pointing out the major
> difference!
> 
> My previous post was meant assuming high quality
> panoramic imaging. All 
> the pro's and con's would go too far to be discusses
> here so you may 
> want to look on some examples to see the difference:
> Compare the following panoramas: (sorry, once again
> the Vienna subway...):
> 
> - in 2006 i used an automatic panohead solution to
> capture bracketed 
> images. The middle exposure was stitched and the
> remaining 2 brackets 
> used the template from the middle exposure. All 3
> exposures were then 
> merged to an HDR and tonemapped back to an LDR:
> As you can seein the following link (the 2006
> images!), the panoramas 
> lack "crispyness":
>
http://www.austria-360.at/wien/ubahn/donaukanal/index.html
> ...especially if you compare them to my latest HDR
> panoramas from the 
> Praterstern which were created with the method(s)
> described in the 
> former mail (the 2007 images!):
>
http://www.austria-360.at/wien/ubahn/praterstern/index.html
> 
> I'm still using the "Stitch/merge" workflow - as
> Mark described - for 
> low resolution (e.g. lightprobes), because i also
> see a slight advantage 
> in ease of handling.
> 
> >
> > So, yes this is a workable solution (and far more
> predictable than 
> > tonemapping *before* stitching!), but it requires
> care and precision 
> > when shooting the panorama frames, and moving
> objects will most 
> > probably show up as "ghosts." It works well for my
> static landscapes, 
> > in any case! IMHO, any tonemapping done *before
> stitching* negates the 
> > effectiveness of the best tonemapping operators,
> since the full image 
> > (and its final HDR pixels) are not being
> considered. Also, the 
> > tonemapping decisions you make as an artist are
> similarly myopic, 
> > since you are not seeing the full image either!
> >
> This is why i mentioned that HDR stitching would be
> an extended workflow 
> based on the LDR stitching. If you don't like the
> outcome, just 
> re-stitch the panorama with the HDR images. No
> additional work needed, 
> just a little more computing power  ;-)
> 
> Best regards
> Bernhard
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> 


Uwe Steinmueller
uwe at outbackphoto.com (Publisher/editor)  www.outbackphoto.com
San Jose, CA/USA  (408 884 3097 Skype: 408 627 4019)         www.photodotcom.com
"Digital Photography Workflow Handbook"
http://www.outbackphoto.com/booklets/booklets.html

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