In the real world, the average solar irradiance is about 1000 W/m^2 ( see the references below). Use Local Subdivs must be enabled in the DMC Sampler to specify Shadow subdivs at this level.Ĭommon settings in this example are Intensity multiplier: 1, Size multiplier: 5.0īy default, the V-Ray Sun and V-Ray Sky are very bright. More subdivs produce area shadows with better quality but render slower. Shadow Subdivs – Controls the number of samples for the area shadow of the sun. This is useful to prevent bright speckles on glossy surfaces where a ray with low probability hits the extremely bright sun disk. Invisible – When enabled, the sun becomes invisible to both the camera and reflections. Allows the user to manually lower the horizon line. Horizon Offset – Specifies an offset for the horizon under the sky-dome. Values close to 0.0 produce a sharper horizon line, while large values produce a softer horizon line. Ground Albedo – Sets the ground color of the V-Ray Sun and Sky system.īlend Angle – Specifies the angle in degrees up from the horizon where the sky starts to blend with the ground albedo. Horiz Illum – Specifies the intensity (in lx) of the illumination on horizontal surfaces coming from a CIE Clear or CIE Overcast sky model.įilter Color – Shifts the hue of the V-Ray Sun and Sky system towards the color specified in the field. CIE Overcast – The V-Ray Sky procedural texture is generated based on the CIE method for cloudy sky. CIE Clear – The V-Ray Sky procedural texture is generated based on the CIE method for clear sky. – The V-Ray Sky procedural texture is generated based on the Preetham et al. – The V-Ray Sky procedural texture is generated based on the Hosek et al. In order to have the Sky texture rendered, you need to select Physically-based Daylight as the Environment Type in the Modo Environment material. Sky Model – Specifies the procedural model that is used to generate the V-Ray Sky texture.
Water Vapour – Controls the amount of water vapor, which affects the sky color, in the atmosphere. For more information, see Example: Size Multiplier. This affects the appearance of the sun disc as seen by the camera and in reflections, as well as the blurriness of the sun shadows. Size Multiplier – Controls the visible size of the sun. For more information, see Example: Ozone Value below. Smaller values make the sunlight more yellow, whereas larger values make it blue. Available in the range between 0.0 and 1.0. Ozone – Affects the color of the sun light. Smaller values produce clear blue sky and sun as seen in rural areas, whereas larger values make them yellow and orange as seen in a big city atmosphere. Turbidity – Determines the amount of dust in the air and affects the color of the sun and the sky. See the Notes section below for more information. Used to reduce the sun's brightness, because by default it can be very bright. Intensity Multiplier – The multiplier for the V-Ray Sun's intensity.
#Vray settings alex hoegrefe how to
See the Lights page for information on how to do this. The steps below will walk through how I take a fully rendered daytime scene and turn it into a night scene using an easy Photoshop workflow.To create a V-Ray Sun, you need to add the V-Ray Sun/Sky package to a Modo directional light. Everybody likes a good night illustration, but they also tend to be the most intimidating to master.
However, that same workflow is equally useful with more complex and developed scenes, and this latest post is my attempt prove it.Īs I was working on the previous post, I realized the daytime scene could easily be shifted into a night scene to generate a more compelling image. The workflow is easy to implement and is especially useful if you are not comfortable setting up night scenes and lighting in an external render engine such as Kerkythea or V-Ray. That tutorial used a very simple base image exported right out of SketchUp. One of the very first tutorials I created described a workflow that generated a night scene only using Photoshop. He is also part of rendering studio Design Distill, generating unique and compelling illustrations for architects around the world. Alex Hogrefe is the creator of Visualizing Architecture, a blog dedicated to educating people in the art of architectural visualization.