This is a recording when the camera is turned on, so the camera is cold. In normal use, this is fine, only some hot pixels appear occasionally, but I think it's normal.
This is a very gain footage (using the keyboard shortcut Alt + A).
I only wonder if this uneven noise distribution is the property of the camera. Can someone please try a black footage(from BMPCC) in Davinci Resolve using Alt + A (Auto Contrast)?
If it is not normal that the upper part of the sensor noise a little bit more, it might mean that noise could be reduced by adjusting the heatsink. It could be a bit less noise when low-light recording.
Once again, I say that this is not visible in a normal footage.
Sorry for my english folks, and thank you!