Hi folks, I'm an amateur photographer trying to get more consistent results from skin undertone tests using my smartphone camera, but I'm running into some frustrating issues with lighting. For example, I took photos of my face in natural window light in the morning, then again under my bedroom's warm incandescent bulb in the evening, and the perceived undertone fluctuates completely! Sometimes my skin looks cool-toned, other times more warm or neutral, which obviously skews any analysis I try to do. I've tried adjusting exposure and white balance settings on the phone manually, but the variation under different light sources is still too variable. It feels like the camera's sensor alone can't always be taken at face value without optimal lighting, which makes me wonder what kind of setup you all use for these tests. Is there a particular type of daylight simulation or color temperature I should focus on? Or specific angles or distances from the light source that help the camera better capture true skin tone? I've found some photography lighting guides focused on skin tone testing and color accuracy, such as find my color palette free , but I'm still curious about hands-on, low-cost lighting hacks or setups that others might have discovered. For instance, would using a ring light with a diffuser make a substantial difference, or is natural daylight near an indirect south-facing window still the top option? Has anyone worked with affordable LED panels or even DIY solutions like using a white foam board to reflect light? Any examples or photos of your setups would be much appreciated. I'd love to hear from others who've managed to get more dependable, camera-based undertone results that don't vary wildly based on the lighting situations. Thanks in advance!