shvrdavid posted at 1:55 AM Tue, 25 July 2023 - #4471045

In Cycles and Superfly, half is no displacement. (median) So if your range is 0 to 1, 0.5 is no displacement. 0 is max negative displacement, and 1 in max positive. 

Ahhhh!  I always disliked that about bump mapping, that it started at the surface, and had no option for burrowing in, as the settings in a certain free competitor can. It struck me as losing half the usefulness of the map.

Thank you for bringing an old dilettante up to date again.  Once I get the thing remapped again, I shall certainly try that.  (I spent much of today simply estivating, as my air conditioner is slowly dying, and it was, IMHO, too hot for anything requiring finicky detail, and patience.)