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The V-Ray Lens Effects Filter Generator is based largely on the model presented in Physically-Based Glare Effects for Digital Images [ 1 ]. For a complete list of references, please see the References and links section.

 

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File Options


 

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The file menu shows options for saving and loading presets and exporting the final filter kernel.

 

Radial Symmetric Pattern Parameters


 

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The Radial Symmetric Pattern parameters control the scale of the overall Lens Filter.

Shape – Adjusts the size of the pattern.

 

Corona Flare Lines Pattern Parameters


 

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The Corona Flare Pattern parameters control the amount of rays emanating from the source of light.

Diametric – When enabled, mirrors the pattern across the center.

Radius – Controls the size of the pattern radius.

Number of Of Lines – Controls the number of lines in the pattern.

 

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titleClick here to expand the Corona Flare Lines Pattern Example

This example demonstrates how different values of the Number of Lines parameter affect the lens effect. Increasing the Number of Lines value produces more rays emanating from the light source, while decreasing it lowers the amount of rays.

The last image also has the Diametric parameter enabled, which mirrors the rays pattern across the center (thus, producing symmetrical flares).

 

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Number Of Lines = 100, Diametric is off

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Number Of Lines = 20, Diametric is off

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Number Of Lines = 5, Diametric is off

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Number Of Lines = 5, Diametric is on

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Special Flare Lines Pattern Parameters


 

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The Special Flare Pattern parameters control the pattern of the Special Flares Lines.

Ray Pattern Dropdown – Determines the number of Ray groups.

Radius – Scale of the Special Flares Lines Lens kernel in Percent.

Number of Lines – Determines the amount of lines used in each ray pattern.

Range – Controls the spread of the Ray Pattern.

Rotation – Rotates the entire Special Flare Lines Pattern in degrees.

 

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titleClick here to expand the Special Flare Lines Pattern Example

This example shows the effect of Range and Ray Pattern parameters on the lens appearance. The Number of Lines is set to 10 for all images.

 

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Number of Lines = 10, Range = 10, Ray Pattern = 2

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Number of Lines = 10, Range = 10, Ray Pattern = 4

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Number of Lines = 10, Range = 10, Ray Pattern = 6

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Number of Lines = 10, Range = 10, Ray Pattern = 8

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Number of Lines = 10, Range = 40, Ray Pattern = 2

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Number of Lines = 10, Range = 40, Ray Pattern = 4

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Number of Lines = 10, Range = 40, Ray Pattern = 6

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Number of Lines = 10, Range = 40, Ray Pattern = 8

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Number of Lines = 10, Range = 80, Ray Pattern = 2

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Number of Lines = 10, Range = 80, Ray Pattern = 4

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Number of Lines = 10, Range = 80, Ray Pattern = 6

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Number of Lines = 10, Range = 80, Ray Pattern = 8

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Lenticular Halo Parameters


 

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The Lenticular Halo parameters control the bounds of the halo.

Inner Radius – Sets the inner bounds of the Lenticular Halo

Outer Radius – Sets the Outer outer bounds of the Lenticular Halo.

 

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titleClick here to expand the Lenticular Halo Example

This example shows how changing the inner and outer bounds values affects the Lenticular Halo.

 

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Inner Radius = 20, Outer Radius = 40

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Inner Radius = 20, Outer Radius = 60

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Inner Radius = 20, Outer Radius = 80

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Inner Radius = 20, Outer Radius = 120

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Inner Radius = 40, Outer Radius = 120

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Inner Radius = 80, Outer Radius = 120

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Mix Parameters


 

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The Mix parameters control how the Lens Parameters mix together into the final Filter kernel.

Pattern 1 – Sets the percentage Radial Symmetric Pattern 1 is mixed with the final Filter kernel.

Pattern 2 – Sets the percentage Radial Symmetric Pattern 2 is mixed with the final Filter kernel

Halo – Sets the percentage the Lenticular Halo has on the final Filter kernel.

Aspect – Determines the Aspect Ratio of the final Filter kernel.

Apply Corona Flare Pattern – Enables filtering of the kernel with the Corona Flare Pattern.

Apply Special Flare Pattern – Enables filtering of the kernel with the Special Flare Pattern.

 

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titleClick here to expand the Special Flare Lines Pattern Example

The following examples shows how lens parameters can be mixed together to achieve a final filter kernel.

 

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Apply Corona Flare Pattern is on, Halo = 0, Diametric is on, Number of Lines = 5

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Apply Special Flare Pattern is on, Halo = 0, Number of Lines = 10, Range = 40, Ray Pattern = 6

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Apply Corona Flare Pattern is on, Apply Special Flare Pattern is on, Halo = 0, Number of Lines = 10, Range = 40, Ray Pattern = 6

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Apply Corona Flare Pattern is on, Apply Special Flare Pattern is on, Halo = 35, Number of Lines = 10, Range = 40, Ray Pattern = 6

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Apply Corona Flare Pattern is on, Apply Special Flare Pattern is on, Halo = 70 Number of Lines = 10, Range = 40, Ray Pattern = 6

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References
References

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