[Image-SIG] 16 Grayscale tiff

[Andrew Wilson]

Hello,
    I'm trying to save load an unsigned 16 bit array from numarray into 
a grayscale 16-bit tiff, I tried using  Image.fromstring("I;16",...), 
but I get an error  "illegal conversion" within img.convert('RGB').  So 
it looks like only 16 bit RGB files are supported?
    Thanks
       Andrew