[Radiance-general] printing floating point images

[Carsten Bauer]

Hi,

cmyk is probably a bit out of date nowadays, it always was a rather poor 
standard suitable for those big printing machines of former time. As 
already mentioned, the best way today is to use those new fancy laser 
printers which use rgb directly without color space conversion.

Apart from color fidelity, another question which might come into play 
is to apply a tonemapping process on the HDR image before converting it 
to rgb. The old Radiance had the pquish script, the newer versions have 
the 'pcomp' program for that purpose. This applys a partially nonlinear 
compression to preserve detail in the highlight/dark regions which 
otherwise would be over/underexposed, in other words it allows to 
compress the image to a contrast range fitting that of the output 
machine (which definitely is the final limiting factor in the whole chain)

-cb