four common portrait lighting patterns:
- Split lighting
- Loop lighting
- Rembrandt lighting
- Butterfly lighting
Style of lighting:
- Broad lighting
- Short lighting
| ratio | f-stop difference | description |
|---|---|---|
| 1:1 | no difference | flat lighting |
| 2:1 | 1 Stop | general slide film |
| 3:1 | 1 stop and 1/3 ish | black & white |
| 4:1 | 2 stops | shadowing/contouring |
| 8:1 | 4 stops-ish | dramatic low key |