Professional studio portrait lighting reference chart

Create a professional studio portrait lighting reference chart featuring the same young Asian model shown in 12 separate portrait panels arranged in a clean 3 column by 4 row grid. The model has short black center-parted hair, smooth natural skin, a neutral black crewneck top, and a calm front facing expression. Each panel shows the same face and pose but with a different lighting setup.

Use a simple gray studio background and realistic photography style. Add clear white text labels at the bottom of each panel.

Lighting setups to include:
Flat lighting
Butterfly lighting
Loop lighting
Rembrandt lighting
Split lighting
Rim light
Ceiling bounce lighting
Low angle lighting
Top light
Hairlight
Backlight
Background light

The image should look like a professional cinematography or photography lighting guide, with consistent framing, realistic shadows, natural skin texture, accurate facial highlights and clear comparison between each lighting style. Use soft studio portrait quality, sharp focus, high detail, and educational reference layout.