you nailed it in one. "For instance, the voice that cracks because it is expressing emotions that go beyond the capacity of what the lungs and throat can bear". What a lovely analogy. The limitations of the lens, and the potential for the image to be degraded in a baked in fashion where no amount of post processing can bring it back to how it would look if shot on a set of master primes or cookes certainly imparts a physical aesthetic largely beyond the control of the camera operator and post production guy. I've not being able to take advantage of this personally (within video terms), but having a raw file with massive information to be pulled around, bring ing back the contrast lost optically by the lens creates a very tangible and physical feel.
The standard Helios is an amazing lens. One of the best. And as said in our faq, we are degrading the results from this old benchmark lens, considered by most to be a go-to lens for nostalgic appearance.
here is a direct comparison between a standard helios and a ff58:-
http://vimeo.com/62310544
And the new owner took this exact lens out on its first expedition last night, linked to a little kowa 8mm anamorphic lens:-
http://www.flickr.com/photos/_tee/8593794794/in/set-72157633099963600