The Xiaomi 15 camera dynamically adjusts brightness and color based on the surrounding environment to optimize image quality. When shooting in low-light conditions, the camera boosts light signals to maintain appropriate brightness levels. However, this amplification also increases the visibility of noise in dark areas, which can cause a purple tint to appear. This phenomenon is more pronounced in areas with poor lighting, where the camera has to work harder to capture details. To achieve better results, we recommend shooting in brighter environments to reduce the impact of noise. Additionally, we are continuously optimizing the camera's performance, so please stay updated with OTA software updates for improved results. Thank you for your understanding.