Hi Mirek

Sometimes you dont need to do any adjustments, it all depends on the job, if youve not got a floor and walls that you need something to interact with (bump into, cast shaddows etc) then your ok.

One thing that I always try to do is match the CG camera to the real camera that you used to film with but again sometimes you dont need to! It all depends on the job your doing.

Glad its going well for you man!