Pelvis, Rib Cage, and Axial Skeleton Rotations

Alright, object rotation is where things get tricky. I made the mistake of starting with the pelvis-- a particularly complicated form. After trying to simplify the pelvis by messing around with http://www.anatronica.com/anatronica-flash.html for a while, I fell back on Gottfried Bammes' construction: 

I guess it's foolish to think I could outdo a career anatomist, but this is no excuse to go rushing back to the "Great Masters" of the Renaissance that Hampton and others recommend. Like philosophy and literature, I prefer to stick to the moderns.




The pelvis rotations came out well enough (for a first try). In fact, I wonder if it is worth drawing the pelvis accurately, rather than as a simplified construction. Save that for later, I suppose. You'll notice I haven't settled on a particular scheme for these rotation exercises. I'll sort that out in the meantime.

 Rib rotations seemed easy enough before I began, but I'm still getting used to freehand rotation. In this exercise and the axial skeleton below, perspective becomes a major concern. The distortion cause by field of view shifts slightly a different distances and with different lenses, and this will be the subject of a study in the future. After all, if I do not memorize the FoV of the human eye, foreshortening may become a serious issue.