There is a lot that can go into figuring out the correct color balance. For instance, the imx477 comes in two varieties, the most popular has an IR-Cut filter, but there is also a version that does not (you can also manually remove the filter as I have done in mine). Some cameras do not have them, but the lens has one built in. Cameras without an IR-Cut filter will have much higher values in the red channel.

Other cameras just have a completely different color sensitivity curve... some extend much further in the IR range like the imx462.

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