Is there a way to find out actual White Balance value in Kelvins when Auto was used?

Iliah Borg wrote:

Bigger wrote:

JohnMoyer wrote:

Bigger wrote:

Iliah Borg wrote:

Nimonus wrote:

Iliah Borg wrote:

Nimonus wrote:

White balance is not a parameter of the exposure

Well, it is, depending on how one understands "exposure"

????

https://en.wikipedia.org/wiki/Exposure_(photography)

How do you define exposure?

The white balance does not affect the exposure. The sensor is read out the same way, regardless of the color temperature setting. The color temperature only tells the post processing step how to scale the red vs. blue values.

That may be true for manual exposure.

If any of the settings are auto, then the camera will modify exposure after calculating statistics of the measured RGGB values. The camera may also modify the interpolation as it creates colors using information not available to some of the raw development software.

True, the camera may use the WB setting to modify the auto exposure settings, so you should try to get that correct to optimize the exposure. What I meant is that once the exposure settings are determined, the WB has no effect on the actual exposure of the sensor; i.e. the sensor is ignorant of the WB setting--it just collects photons. WB is applied after the exposure to convert the raw RGGB Bayer pixel values to a viewable image by varying the R vs. B gain.

You may want to address WB and WB settings separately. WB is the property of the scene and is defined by the light; WB setting (in-camera) is something entirely different.

Yes, I should have specified that "the WB [setting] has no effect on the actual exposure of the sensor".