< Modern Photography

Studio delta EV Contrast ratios

Contrast ratio
ΔEVContrast
1.01:2
1.61:3
2.01:4
2.31:5
2.61:6
2.81:7
3.01:8
3.21:9
3.31:10

Studio flash ratios

Studio flash ratios
Ratiof/5f/5.6f/6.3f/7.1f/8f/9f/10f/11f/13f/14f/16f/18f/20f/22
f/6.3 1:1.51:1.5-1:1.51:1.51:2.01:2.51:3.01:4.51:5.01:6.51:8.01:10.01:12.0
f/7.1 1:201:1.51:1.5-1:1.51:1.51:2.01:2.51:3.51:4.01:5.01:6.51:8.01:9.5
f/8 1:2.51:2.01:1.51:1.5-1:1.51:1.51:2.01:2.51:3.01:4.01:5.01:6.51:7.5
f/9 1:3.01:2.51:2.01:1.51:1.5-1:1.01:1.51:2.01:2.51:3.01:4.01:5.01:6.0
f/10 1:4.01:3.01:2.51:2.01:1.51:1.0-1:1.01:1.51:2.01:2.51:3.01:4.01:5.0
f/11 1:5.01:4.01:3.01:2.51:2.01:1.51:1.0-1:1.51:1.51:2.01:2.51:3.51:4.0
f/13 1:7.01:5.51:4.51:3.51:2.51:2.01:1.51:1.5-1:1.01:1.51:2.01:2.51:3.0
f/14 1:8.01:6.51:5.01:4.01:3.01:2.51:2.01:1.51:1.0-1:1.51:1.51:2.01:2.5
f/16 1:10.01:8.01:6.51:5.01:4.01:3.01:2.51:2.01:1.151:1.5-1:1.51:1.51:2.0
f/18 1:13.01:10.51:8.01:6.51:5.01:4.01:3.01:2.51:2.01:1.51:1.5-1:1.01:1.5
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