40dbaby wrote in post #13338584
Just keep in mind that the IS motor sound will be picked up by the 5d2 and is very noticeable....unless you're using an external mic.
Yip, got a nice external mic, although most of the moving shots will have separate audio over the top 
I've used plenty of IS lenses, they do make a lot of noise.
Snydremark wrote in post #13338369
Looks like you've got it narrowed down to your only two options in that category, to me. Features (fixed vs variable aperture, slightly wider vs moderately longer, etc) and budget seem like the deciding factor there.
Yip, sounds like are only the two.
I thought Sigma or Tamron might have made one as well, but they are clearly more focused on the consumer and crop sensor market.
JeffreyG wrote in post #13339636
There may be more 1.6X specific range lenses numerically, but there are not really many with a better feature set than the two FF lenses you mentioned.
DOF is not an issue, everything will be shot at around F8. If I want shallow DOF I can pull out one of my L's.
These are really the deciding factor between using the 5D2, or just getting an HD handy cam with built in IS.
Given the cost of the 24-105 is about the same as a really nice HD video camera. Of course the IQ will not be nearly as good, but it would suffice for the work I do.
I find it interesting that IS is pretty much standard now on most crop sensor lenses, of which there are new ones coming out all the time.
Clearly the FF market is not as popular and the R&D is getting directed else where.