Trijicon Triangle Post Reticle Question

[anon]

I have never looked through a Trijicon scope with the triangle post reticle.

I have searched but find no information about where the optical center is when zooming the second focal plane scopes.

Which part of the triangle does not move when changing the zoom? The tip, center, where?

Thanks.

 

[Thorbeast]

The very tip/aiming point.