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This page provides information on the standalone Lens Effects Filter Generator that is included with V-Ray for Unreal.

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Overview

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The Filter generator is a simple tool for composing filters (HDR images in *.hdr format). It is specially designed to produce filters for the Lens Effects render effect.
 
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Installation

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The Lens Effects Filter Generator tool is installed along with V-Ray for Unreal. Start the filter_generator executable in C:\Program Files\Chaos Group\V-Ray\Unreal\tools 

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

 
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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.

 
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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 Lines – Controls the number of lines in the pattern.

 
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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 Kernal 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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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 bounds of the Lenticular Halo.

 
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Mix Parameters 

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

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

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

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

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

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

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

 
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