Jong wrote:
> 
> Dear all,
> 
>  I'd like to save my raytraced image as 16bit/color PNG and eventually
> convert the PNG into either 16bit grayscale PNG or 16bit grayscale TIF,
> which would result in a range of zero to 65,535 steps in gray level.
> When I write down the +FN16, would this be a compressed 16bit per color PNG?
> Would there be any other options inside the POV-ray with which I could save
> it as 16bit grayscale PNG or 16bit grayscale TIF?

When you use '+fn16' you will get a 3x16 bit rgb PNG file.  When
specifying 'hf_gray_16 on' in global_settings you will always get a 16 bit
grayscale PNG with '+fn'.  Same applies for PPM (+fp).

Christoph

-- 
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