I use more than a year both 5DmkII and GH2 for filming.
Colors of 5D are better on my taste and feel in terms of natural, vivid wide range color scheme.
But I get the best and simpliest match of both cameras using "Neutral" 0,0,0,0 on 5D
and "Vivid" on GH2. No cinestyles they can ruin your picture in certain circumstances.
Hi!
you can visit these places to "feel and touch" lenses
usually they have bunch of old optics:
http://www.kamepa.ru
http://www.photosale.ru
(see contacts section for address)
or search this site and make apointements before you go:
http://molotok.ru