On 2020-11-16 6:12 PM (-4), Bald Eagle wrote:
> 
> Is this a custom version that you edited yourself, or a later version of the
> original?
> All I found was this:
>
http://news.povray.org/povray.text.scene-files/thread/%3Cweb.3e0c736a1f1273cdb29393de0%40news.povray.org%3E/

Doctor John posted this version in 2009:

   https://news.povray.org/4aa8db4e$1@news.povray.org

As these camera shift macros and discussions have been sitting on my 
computer completely uncomprehended for years, I cannot say whether the 
"Corrected silly mathematical error in vertical scaling" addresses 
Thomas's concerns.

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