Hand held - the D850 has an amazing sensor and when coupled with a Zeiss lens it is probably as good as full frame can get. This is literally the 15th image taken with the new D850 for me.
The outdoor lights in this scene have just about every color temperature there is - from the yellow orange sodium vapor lights of the Tokyo Tower to the green blue of the mercury vapor street lights the the aircraft warning lights and the multiple colors of the neon signs - difficult to white balance a scene like this for sure - the M10 sensor is a definite improvement over the M240 series