Comparison of good and bad photos. The left side shows a clear, well-lit, in-focus photo of a smiling couple in a well-lit room with a plant in the background, with checklist points such as well-lit, in focus, high contrast, straight-on angle, clean background, and accurate colors. The right side shows a poorly lit, blurry photo of two people in a dark setting with a cluttered background, with checklist points including poor lighting, out of focus, low contrast, odd angle, cluttered background, and color cast.