In article <4035ebdb@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

> Christopher James Huff <cja### [at] earthlinknet> wrote:
> > They do so with less precision, but 32 bits per component 
> > is overkill for most things.
> 
>   Not if you want to perform post-processing of POV-Ray images... :)
> 
>   (And btw, wouldn't them be useful for HDRI images?)

Depends...most processing is unlikely to benefit much from the greater 
precision, and it uses more memory. ILM uses a half-precision 16 bit 
format...a sign bit, a 5-bit exponent, and 10 bit mantissa.

Hmm...there's nothing stopping you from putting those half-precision 
float values in a 48-bit PNG image, though they won't display properly 
in any PNG reader. FNG? Even has a nice pronunciation: FaNG

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/

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