Have you tried using Adobe ImageReady to dither it down? That seems to do a
pretty good job of reducing the number of colors without ruining the image (it's
actually for producing GIF and JPEG files but I would think you could convert to
something else in Photoshop).

Callie Mack
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Chris Gralapp wrote:

> Hellllo fellow sci-arters,
>
> I have done a digital illustration of neuron cells in the brain as a
> landscape, and now we want to print it on fabric.
>
>  Has anyone any textile experience in the digital realm?  The fabric printer
> tells us he needs it as indexed color, and that he can use no more than 24
> colors.  This sort of cramps the color space a bit, considering it looks OK
> at 256, but when we dither it down to 24, strange things happen, of course.
>
> It seems that digital fabric design should be doalbe, and that they should
> be able to use CMYK files to work from--but I guess fabric printing is very
> different from paper printing?
>
> Thanks,
>
> Chris