Update #3: another post from a reader on this topic from 3 weeks ago.
Update #2: Another reader reported that slashcam.com got an official confirmation from Nikon Professional Services on the D3s manual video control:
“As soon as the live-view mode in the shooting menu is set to “tripod” and the camera to manual mode (M), it is possible to manually set and adjust aperture, shutter speed and ISO-value manually, before and during videorecording.
Automatic focussing is possible using the AF-ON button (even while recording).
Additionally, for optimal exposure of the video, an exposure scale is available for you at the right edge of the Image on the Camera screen.”
Update #1: A reader just submitted this video where James Banfield (Nikon UK support an training manager) clearly says there is no manual control in video mode (5:59 mark). Anyone from Nikon care to clarify this for us? Thanks.
Multiple readers have asked me about the manual video control of the Nikon D3s. The camera has a full manual video mode (ISO, shutter, aperture)... and this is not in the manual - on page 66 of the manual it says "The camera adjust shutter speed and ISO sensitivity automatically", but if you put the camera in manual mode and hit the OK button you can manual adjust at will. I am not sure why Nikon did not advertise this clearly from the very beginning and why they did not make it clear in the manual (I admit, I have not read the whole manual, maybe I am missing it - please correct me if I am wrong), but it is a fact that many people were confused on this topic.
This video shows manual shutter speed and ISO changes:
Some more interesting D3s videos from the same author after the break (click on the link to continue reading) - Red One & Nikon D3s comparison @ 720p:
Canon 5D mk2 vs Nikon D3s low light comparison: