I am preparing a few undertone photos and want to avoid misleading results. Automatic white balance seems to turn each room into a different colour story. I plan to use indirect daylight near one window rather than direct sun. To make the images comparable, I will use one distance and no visual effects. I am considering a neutral card in the photo so the light has a visible reference. I also plan to repeat the setup on another day before drawing any conclusion. A basic [url=https://color-type.top]skin undertone test camera[/url] might be a useful checklist before I compare the photographs side by side. I am treating the photos as notes, not as a definitive diagnosis. I want to review the photographs slowly before assigning a warm or cool label. How do you keep your phone from changing the comparison halfway through? Low-cost methods would be ideal because I am only learning the basics. Keeping the original files feels important when automatic processing can be so persuasive. Thanks for any practical suggestions from your own experiments.