Cool thanks for the info. The OCS palette conversion may make colours a little different (hardly surprising when there's 16 shades per primary colour instead of 256!
). But it wouldn't affect overall quality such the extra noise (which hey that is what dithering does!).
I think to make it a fairer comparison, maybe I could grab a few of the source images Gibs used, perhaps for Turrican II and Battle Squadron for example. They don't seem to have come from Exotica by the looks of things. Then I can convert using my method and we can compare. I'm definitely up for finding improvements where we can.
