Umbrella Calculator
Calculate light quality, coverage, and power loss for photography umbrellas.
Umbrella Settings
Light Quality
Soft
Softness ratio: 0.53
Light Characteristics
Apparent Angle29.4deg
Spread Angle180deg
Coverage Width65324957412781480.0m
Power & Efficiency
Light Loss1.5 stops
Efficiency70%
Effective Power25%
Max Distance (f/5.6)3.6m
Umbrella Comparison
Shoot-Through: Softest, most spill, less power
Reflective White: Soft, good power, wide spread
Reflective Silver: Most power, more contrast
Parabolic: Focused beam, less spill
Tips
- Umbrellas spill light - control with flags
- Position flash shaft at umbrella focal point
- Larger umbrellas need more powerful lights
- Shoot-through works well as close fill light
- Silver can create hot spots - use with care
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.