My guess would be that the noise is there, but the camera’s screen being smaller and designed to “look good” does not show the full amount of noise as you see in Vegas when it is brought up to “full resolution”…Another thought, are you able to view is “Best” or is your preview another setting? If you are viewing anything other than Best Full, you are not getting true resolution….just my two cents anyway….
Scott Francis
Mind’s Eye Audio/Video Productions