If you take a blank Bryce doc and create a basic terrain, you get a mountain 20.48 units high. Gives a scale of roughly 1 unit = 150 m. If instead you import a basic human figure, you get a figure standing 40.96 units high. Gives a scale of roughly 1 unit = 0.05 m. I'm curious as to whether other people try to work to a standard scale, and if so, which. Does anyone know if the Bryce designers had a standard scale in mind? My guess is that the first scale is closer to the intentional one, since with the second scale, an "eye-level" camera is actually toe-level. Personally I tend to work to the second scale.