I've noticed the same thing- so much so that I tried to reinstall Bryce 4 for comparison. But whether due to Bryce 5 or Corel's Bryce 4 update it will no longer accept my original B4 serial number. It never ends, does it? Sometimes I think I should go back to charcoal, ink and pencil... But I suspect it is a matter of settings. If I import some of my older B4 work most of it renders very similarly (but not identically) in B5.