Ah, so there has been some digital tweaking of planetscapes at least then? I'm assuming to render more detail into them (that's one area where some planetscapes in early TNG do tend to fall down a bit, probably even in comparison to the remastered TOS planetscapes now) and texturing?
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist