Peter Gawthrop wrote:

> I sort of agree with you although Reinhard's "photographic" operator
>   gives a similar result to enfuse in many cases.

That's true, "photographic" is very good although it has it's 
limitations if the DR is too high. And I remember some strange magenta 
areas in gray clouds (but this could be a bug in the implementation).

However, since the HDR tonemapper doesn't know what actually was shot it 
sometimes tries to brighten dark shadows where there isn't sufficient 
information causing heavy noise. This is by the very nature of an HDR 
file where there is no limit to tonal values. Hence a tonemapper must be 
adjusted any time and every automatic approach like histogram analysis 
etc. must fail in such cases.

This is not the case for enfuse since it directly uses the shot images 
without intermediate HDR file. Hence it never will try to brighten 
shadows that are pitch dark even in the brightest image.

This together with the computation times yields HDR creation and 
tonemapping (almost) useless for professional panorama creation.

-- 
Erik Krause
http://www.erik-krause.de

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