Consider the attached sample images. I took them circa 4:50 AM and 3:50 AM, respectively. On the Live View display of the Powershot G9X Mark II, they were full of light.
The pictures were taken as JPEG (yes, I should've shot that in RAW and figured out the shadows later, but the screen told me the shadows were fine, so I didn't bother). IrfanView claims that the colorpace is sRGB, and there is no explicit setting for color space in the camera. The laptop screen is IPS 8-bit 1920x1080 14" (Lenovo Thinkpad L440). I do not "import" the pictures in any application, just copy the files using Explorer on 64-bit Windows 7 64-bit, which was preinstalled by Lenovo.
Consider the first picture. The shadows below the hull of the utility vessel did not blend with the color of the hull, which in turn was gray and the detail was easily visible. On the PC display, it's really dark in that area, all nearly black. Next, the trees in the background lose detail in the shadows as well on the PC.
Now consider the second picture. It's not as dramatic a change as with the first one, but still, the whole photo is just lighter on the camera screen, with seemingly better visibility in dark areas as well as slightly better contrast, and the water is more vivid, more blue than gray. I like the water more as displayed by the camera.
Hence the following questions.
Does any hidden conversion take place inside the camera before the image is displayed on the Live View screen? Take into consideration that there is no RAW file to process and display. The problem manifests itself with JPEG-only shooting.
Is the camera screen built with a 10-bit panel or using some other colorspace?
Is adjusting photo settings for the next shot based on how the Live View screen displays the result of the previous shot the correct way of finding the right settings for a given shot?
Can I see the same picture on the PC display and if yes, how?
P.S. The utility vessel is static in that location so I can go and re-take the picture as the discussion unfolds with corrections applied.
Edit: The answers to the linked question #1 don't mention correct shooting technique using the histogram, so it doesn't quite solve my problem. The question #2 is about viewing RAW files, hence it does not apply.