---
title: "VRayExposureControl"
canonical: "https://documentation.chaos.com/space/VMAX/113585290/VRayExposureControl"
format: markdown
---
This page gives details on how the settings for the Global Exposure Control work. Overview The VRayExposureControl uses the exposure settings of a VRayPhysicalCamera without actually having to render through one. V-Ray also partially supports the similar Physical Exposure Control in 3ds Max 2016 and later. ||Rendering menu|| >  Exposure Control...  >  Environment and Effects  window >  Environment  tab >  Exposure Control  rollout > select  VRay Exposure Control  from the dropdown Click on the GIF to enlarge it V-Ray Exposure Control Mode  – Chooses between several modes of applying the exposure control.   From VRay camera  – Exposure settings are taken from a VRayPhysicalCamera specified in the Camera node.   From EV parameter  – Exposure settings are based on the  Exposure value (EV)  parameter.   Photographic  – Exposure is controlled through the  Shutter speed ,  f-number , and  ISO  parameters. Camera node  – Specifies the VRayPhysicalCamera node from which the exposure settings will be taken. Exposure value (EV)  – Controls the exposure with a single parameter. Increasing it makes the image darker and decreasing it makes it brighter. Shutter speed  – Shutter speed, in inverse seconds, for the still photographic camera. For example, shutter speed of 1/30 s corresponds to a value of 30 for this parameter.  f-number  – Determines the width of the camera aperture and the exposure.  ISO  – Determines the film power (i.e. sensitivity). Smaller values make the image darker, while larger values make it brighter.  White balance preset  – Modifies the image output in the same way that a real-world camera performs a white balance. Objects in the scene that have the specified color appear white in the image. Note that only the color hue is taken into consideration; the brightness of the color is ignored. There are several presets that can be used, most notably the Daylight preset for exterior scenes.  White balance  – Specifies a custom color for the white balance.  Temperature   – When the  White balance preset  is  Temperature , this parameter controls the white balance color. Notes For V-Ray versions 6 and prior, for the VRayExposureControl to work, make sure that the  Use 3ds Max photometric scale  option is enabled in the V-Ray  Global Switches  rollout. Starting with V-Ray 7, the  Use 3ds Max photometric scale  option is enabled by default and has been removed from the UI.