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This page provides information on the Light Meter.

 

Page Contents

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Overview

UI Path: ||Create panel|| > Helpers > Choose VRay  from dropdown > Click VRayLightMeter > Click and drag in viewport to create light meter grid

 

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The VRayLightMeter helper is an aid for evaluating how a scene is illuminated. It is intended to simulate the use of a real-life light meter used in photography and film production.

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The information presented by VRayLightMeter does not change or otherwise affect the lighting in the scene; it only reports on it. This helper is intended to provide information so you can make adjustments to the scene's lighting at your own discretion.

 

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 UI Paths:

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 ||Create menu|| > Helpers > V-Ray > V-Ray Light Meter > Click and drag in viewport

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 ||Create panel|| > Helpers > VRay category > VRayLightMeter button > Click and drag in viewport

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VRayLightMeter

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Active – Enables or disables the VRayLightMeter helper.

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The following methods of the  VRayLightMeter  object are accessible from MaxScript.

 

VRayLightMeter MethodDescription

calculate()

Calculates the values along the light meter grid.
saveCSV<filename>Saves the values from the grid into the specified text file, in CSV (comma separated values) format.

  

Notes

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Notes

  • The VRayLightMeter helper is based on the texture baking and render elements functionality of the V-Ray renderer.
  • The VRayLightMeter helper uses brute force GI with 100 subdivs and 100 bounces to calculate the measured values regardless of the GI engine selected, and regardless of whether GI is enabled in the scene.