Diffusion Calculator
Calculate light softness and power loss when using diffusion materials.
Diffusion Settings
Light Quality
Medium (Mixed Use)
Softness ratio: 0.48
Light Analysis
Apparent Size17.1deg
Base Softness Ratio0.30
Spread Increase+60%
Power Compensation
Light Loss1 stops
Effective Power50%
Power Compensation2.0x
Softness Guidelines
Ratio 1.0+: Very soft, wrapping light
Ratio 0.5-1.0: Soft, flattering portraits
Ratio 0.25-0.5: Medium, defined shadows
Ratio 0-0.25: Hard, dramatic lighting
Tips
- Larger apparent size = softer light quality
- Move light closer for softer shadows
- Stack diffusion for even softer results
- Consider color temperature shift with some materials
- Diffusion also increases light spread angle
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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.