The noise is definitely more visible in darker areas, however is seen in the compressed MOV video in the recorded files on my computer, and seen on the LCD monitor in the camera (although I have to zoom in slightly as the monitor is so small). I do not have an external monitor connected to the HDMI port.
I understand the noise is slight and can be removed with noise reduction software, however other videos I have seen on the internet do not contain nearly as much noise, and many YouTube videos show no noise reduction in their “film workflow” so how can this be the case?