Vignetting Calculator
Calculate lens vignetting - the gradual darkening of image corners. Understand how aperture and focal length affect light falloff.
Lens Parameters
Thick filters can cause additional vignetting
Types of Vignetting
- Natural: Light falloff due to angle (cos4 law)
- Optical: Multiple lens elements block oblique rays
- Mechanical: Physical obstruction (filters, hoods)
Corner Vignetting
2.14 stops
Strong
NNatural Vignetting
1.72 stops
BCorner Brightness
30.4%
AHalf Angle
42.0 deg
SSeverity
Strong
Brightness by Position
25% from center93.5% (0.10 stops)
50% from center75.9% (0.40 stops)
75% from center52.8% (0.92 stops)
100% from center30.4% (1.72 stops)
Vignetting by Aperture
f/1.42.57 stops
f/22.32 stops
f/2.82.14 stops
f/41.72 stops
f/5.61.72 stops
f/81.72 stops
f/111.72 stops
Reducing Vignetting
- Stop down the aperture 1-2 stops
- Use slim filters on wide-angle lenses
- Avoid stacking multiple filters
- Enable lens profile corrections in software