Dave, good looking desert scene. You may already know this, but since the regular render engine is a different engine to the premium engine, you can sometimes get a radical improvement on high frequency bump materials (like your ground mat) by switching over and just using 16/32 rpp even if you don’t engage any of the premium effects.
No I didn’t know it was a completely different render engine, though of course I know you get different result, thanks.
It was rendered with premium (at only 4rpp) and uses TA. I did a render at 32rpp too but I preferred the one with all the noise as it looks more gritty.
And just in case anyone thinks the black and white old photo one was done using some secret Bryce technique, I’ll just point out that the photo effects are entirely Photoshop.