In message ,
(Toby Thain) wrote:

wrote in message . ..
...
The sad fact of the matter is that not only is PS' "16-bit" RGB only
15-bit, but its "16-bit" greyscale has even less effective bits. Even
if you perform a bicubic upsampling, you can't get the missing values.

That's kind of obvious once you accept that the internal
representation is only 15 bits.

It's not obvious, though, when the missing values are 15-bit values.
Rather than 32,769 values, there are only about 11,000 values.
--


John P Sheehy