Re: Just to point out...
You and the article are talking about different things. 48 bits per *pixel* is 16 bit ber *channel*. This is what Photoshop means when the image is 16 bit mode.
I believe this can equate to 64 bits of total data per pixel (i.e. 16 R 16 G 16 B, 16 alpha) in the same way that 8 bits per channel gives you what is usually referred to as 24 bit colour, but uses 32 bits when there is an alpha channel. The latter is what Photoshop calls 8 bit.
32 bit in Photoshop refers to 32 bits per channel, not per pixel. So effectively 96 bits per pixel. It would be 128 if you could include an alpha channel but you can't in Photoshop CS2 at least as it doesn't support alpha channels or multiple layers or most of its editing functions in 32 bit mode images. Newer software may change that in future.
Biting the hand that feeds IT
