Free Professional High Quality 3D Tutorials

Gamma 2.2 Explanation

This is a detailed description of the work with Gamma 2.2.

The heart of the problem of dark renders is in that the image and monitor gamma values are different.

Gamma is the degree of nonlinearity of the color gradient from dark to bright values. In mathematical point of view the linear gamma value is 1.0 and this is why software such as Max, V-Ray by default performs calculations in the gamma 1.0. But the gamma 1.0 value is consistent only with the «perfect» monitor, which has a linear dependence of the display from white to black. Because there is no such monitors, the actual gamma of devices is nonlinear.

The gamma value for the video standard NTSC is 2.2. For computer displays the gamma value is typically between 1.5 and 2.0. But for convenience the nonlinearity of the color gradient on all screens is considered as 2.2.

When the monitor with gamma 2.2 shows an image with a gamma 1.0 we get...

V-Ray Gamma 2.2 Tip

Many 3d artists, especially those who faced the rendering of the interiors noticed that with physically correct formulation of the lights there is an overall dark-fetched result in illumination. That is noticeable in the corners and on the shadow side of objects especially.

Everyone tried to deal with this issue in different ways.

The main problem is the default linear Gamma 1.0 using.

In order to quickly use the gamma 2.2 for 3ds Max + V-Ray, just follow these steps:...

VRaySky + ColorCorrect 3ds Max Tutorial

While working with V-ray Renderer it's often arises the need of using a specific V-Ray map - VRaySky to illuminate the 3d scene.

In most cases the standard settings of the map is quite sufficient. But sometimes the color saturation is too high. It gives a strong yellow or blue light. Unfortunately, a combination of ozone and turbidity parameters only, does not always provide the desired result.

But as a way out of this situation is the ColorCorrect using. It's enough to put into a ColorCorrect Source slot the VRaySky map and adjust the...

Using ColorCorrect in 3ds Max Tutorial

ColorCorrect is a 3ds max texture plug-in which alters the colors of any map. This is very convenient and flexible tool of control over the procedural maps and bitmap textures. ColorCorrect is an improved analog of V-Ray Renderer VRayColor map and 3ds Max Output map.

Advantage of ColorCorrect on these maps is that it allows you to adjust the image parameters such as Brightness, Contrast, Saturation and also provides the ability to manage color in HSV, HSL color modes.

With ColorCorrect you can use the same map in different parts of the scene with different values of brightness, contrast, gamma and so on, what eliminates the need for editing the maps in raster editor such as Photoshop and creating different variations on your hard disk. Also this will reduce the total size of the scene and the consumption of memory in 3ds Max. For full control all parameters are presented as a separate...