Yes the smoothnes of the zoom is really a pleasure, The Varizoom was used with this shot, speed is very controlable.
2 HMC40 make me feel I can count with camera, The other camera was Canon DSLR, The reason why the greens are different is because the
camera angle is Little higher with the HMC40, The HMC40 have a lot of Dynamic range also.
Post Production was very simple just a Boris plugin in Premiere Pro. By the way Lighting something to consider, Lowel lights are my favorites for controlable light.