@AndyN, this is a firmware issue not a hardware issue. A new camera won't fix it. Nextbase needs to resolve this in the firmware. It is not an "exposure problem", it is a colour balance problem.
The same problem has manifested from time to time in other dash cams going back years now. It was a well documented problem at one time in the Mobius 1 camera and there were quite a number of well documented reports of the same issue with the Street Guardian SG9665GC (V2).
The problem has to do with the way the camera handles the RGB (Red-Green-Blue) values as it attempts to achieve White Balance (the proper calibration of RGB values). While it is less apparent in your examples (so far) the issue generally arises when an object of one RGB color enters the frame that cause the camera to overcompensate to the opposite RGB color when as it makes the adjustment.
The way camera auto "
white balance" functions is that it constantly adjusts the additive primary colors RED, GREEN & BLUE so that the color white appears white in the image when the three colors are in balance. When white appears pure white in a digital image all the other colors in the scene should appear in their proper balance. Often with our dash cams a "close enough" result is all we can expect but quite adequate.
Notice in the standard RGB color charts below that when the three colors are in balance the center is pure white. So this illustrates what is happening. The problem tends to manifest when the camera adds too much of
the opposite color on the chart in an effort to compensate. So if a YELLOW object enters the frame the scene will suddenly turn BLUEISH. If a RED object enters the frame the scene will turn CYAN, and so forth.
In your images, it is not quite so apparent what is triggering the shift but if you examine your footage carefully there is a high likelihood that some object such as a car, building or road signage enters the frame just before the color shift.
YELLOW & BLUE are directly opposite on the color charts. The camera's auto color balance is overcompensating the correction and shooting past the white balance point in the center of the charts.
Here is an example of this happening with the Mobius A2 camera. Notice how, when the red car and then the RED buildings begin to fill the frame the scene suddenly take on a CYAN color cast. Note too that RED and CYAN are directly
opposite one another on the color charts.
Here is an example of the same issue with the Street Guardian SG9665GC only in this case a YELLOW truck enters the frame and suddenly the scene turns BLUE. This time note that BLUE & YELLOW are opposite one another on the charts.
Finally, here is an example from six years ago of a CYAN color shift cause by the RED Coca Cola signage entering the image. This one is subtle and I post it because it may be more illustrative of what is happening with your camera. If you pay close attention you will see the color shift happen just when the signage appears in the frame.
You can read more discussion about this and see other examples in these older threads.
https://dashcamtalk.com/forum/threa...ates-and-pre-release-access.16310/post-305597
https://dashcamtalk.com/forum/threads/mobius-a2-lens-experiences-observations.27691/post-320042
https://dashcamtalk.com/forum/threads/feitelijks-sg9665gc.16011/post-266381
Thanks for the update.
