2008.02.11 17:29 "Re: [Tiff] Re: Help with TIFFWriteScanline()", by Gerben Vos
Would 8 SPP squeeze the image into a smaller space?
I am not sure what 8 samples per pixel would mean. 3 samples per pixel is reasonable for an RGB image, a fourth could indicate an alpha channel, but most people never see more than that unless they're into professional printing or even more specialized fields.
How is 1 SPP producing a grayscale image?
Logical: there is 1 sample for every pixel. The sample represents the grey scale value (0..255) and is expressed in 8 bits (that is, 8 bits per sample).