About PhtotREt Pro

There are 8 colo inks in HP 7960 and use PhotoREt Pro to reach 72.9M
colors. And they claim there are 289 levels of shapes of color. How is
the number come from??

From the manual

Image file formats JPEG Baseline

TIFF 24-bit RGB uncompressed interleaved

TIFF 24-bit YCbCr uncompressed interleaved

TIFF 24-bit RGB packbits interleaved

TIFF 8-bit gray uncompressed/packbits

TIFF 8-bit palette color uncompressed/packbits

TIFF 1-bit uncompressed/packbits/1D Huffman

"dan" <danzel0906@gmail.com> wrote in message
news:1119923932.124943.307270@o13g2000cwo.googlegroups.com...
> There are 8 colo inks in HP 7960 and use PhotoREt Pro to reach 72.9M
> colors. And they claim there are 289 levels of shapes of color. How is
> the number come from??
>