John Houghton gave me a link to a website which shows how to straighten buildings etc in Ptgui using T1 control points. I've done that with the vertical columns in this attached image but as you can see the roof is not level nor is the foreground.
Is there one way of levelling verticals and one for horizontals.
I'll try to contact John but if anyone see's this and can help I'd appreciate.
Incidentally this is approximately a 180 degree pano'