Quote - I get what you're saying, but you have to be exaggerating when you say its less than a dozen vertices to move around.  If you are that low poly, even with Catmull-Clark, then you can't possibly produce the curves I made.

[Added Later]

Perhaps you mean control points of a surface of revolution. Then I can see it being less than a dozen, because that's how I made it.

Fair enough. The "less than a dozen vertices" would apply to my current model, in which the complete pupil has only 9 vertices - one in the center and 8 on the outline. To get the funnel shape you are using I'd have to add at least another ring inside. But Wings3D has a number of tools that let you select several vertices at once and slide them along in a synchronized fashion. So it's not a lot of effort to make these kinds of morphs at any rate. Of course your method definitely wins if many different variations of this kind are needed. But hey, there's only so many things one can sensibly do with pupil and iris shapes.

That said, I could certainly just adapt a reasonably low-detail version of your model to my process, and then we'd have both the parametric and the hand-modeled option.

-- I'm not mad at you, just Westphalian.