In article , android
wrote:


which got 16bit support with CC...

plug-ins did, however, photoshop itself had support for 16 bit since
1992 in version 2.5, enhanced with version 5 in 1998 and again in
2003 with cs.
https://en.wikipedia.org/wiki/Adobe_Photoshop_version_history

Liar. From the link in the above: "16 bit per channel layers, painting,
and adjustment" were added in CS/PS8

scroll up to version 2.5, where it states "16 bit per channel support".

Liar. Not very complete such. Maybe reading and writing to file and not
much more. Certainly not layers, which was added in CS...

layers was v3, with adjustment layers in v4, something the gimp doesn't
have and according to its road map, won't ever have, making it useless
for anything serious.