Gamma 2.2 Tip
tags: tutorials, tips-and-tricks, rendering
This is a quick tutorial for how to change Gamma to 2.2. Detailed description of working with Gamma 2.2 can be found at: "Using Gamma 2.2" in Rendering section.
In order to use the gamma 2.2 for 3ds Max + V-Ray, just follow these steps:
1. Change the gamma value, in which V-Ray renderer works. To do this find the drop-down tab "V-Rray: Color mapping" at the "V-Ray" tab in "Render Scene:" (F10) dialog and change the value "Gamma:" from 1.0 to 2.2.
2. Enable V-Ray Frame buffer in order to be able to see the results of gamma changing. A feature of V-Ray renderer is that the color mapping gamma correction works in the Frame buffer only. To do this, set "V-Ray: Frame buffer" checkbox ON at the "V-Ray" tab in "Render Scene:" dialog.
3. Change the gamma value, which 3ds Max will work.
3.1. Adjust gamma of textures at the input of 3ds Max. For the texture gamma correction at the program input you should change the default value of "Input Gamma" from 1.0 to 2.2 in the Customize <=> Preferences ...<=> Gamma and LUT. Do not forget to enable "Enable Gamma / LUT Correction" option to access the gamma settings.
3.2. Set the correct gamma 2.2 display mode in the 3ds Max. To set the correct display of materials in the "Material Editor" and gradients in "Color Selector" you should also use the settings in the "Gamma and LUT" tab. For this the 2.2 value of Gamma in "Display" segment and checkboxes "Affect Color Selectors" and "Affect Material Editor" in a "Materials and Colors" segment must be set.
Gamma 2.2 has become the standard for many 3d professionals working with 3ds Max and V-Ray. We hope that this lesson will help you to correctly configure your workflow in 3d!
RenderStuff
Nikhil
RenderStuff
Particularly, if you use standard max's frame buffer, it saves not the shown image, but an image corrected with a gamma specified in a system parameters. Double check the Output Gamma value that is on the Bitmap section in the Gamma and LUT tab of the 3ds max system preferences. Make sure that you have exactly recommended in the tutorial value, which is 1, not the 2.2 or any other.
But anyway we recommend to use not the standard max's, but a V-Ray Frame Buffer. Using it do not cause such problems. It saves exactly shown picture.
Also make sure that you do not override the gamma value for jpg format when saving. The window of saving jpeg has a two special options: Use system default gamma and Override. The Use system default parameter must be chosen.
In any case we strongly recommend to read the full Using gamma 2.2 tutorial and find the detailed description of all possible issues ;)
bora
some users might ask" why the hell my gamma setting does not seem as calibratred , the gray box is clearly visible even though i have input 2.2 to it."
i think you should mention adboe gamma for calibrating monitors as a first step.
infact i my self will be gratefull if you can recommend any better software solution other than adboe as it is absolute.
RenderStuff
The unified color display concept on all devices and monitors is a truly great thing. But, unfortunately, this approach is very idealistic. In spite of many steps performed to achieve the overall color display similarity there are differences, and sometimes very evident.
Not many 3d artists are critically interested in ideal display of their images on the ideally calibrated monitors, as often their renderings are shown not only on their monitors, but on usual, as a rule, not calibrated monitors of their clients and colleagues.
But anyway, the desire to make your monitor and visuals have ideal uniform colors is very appreciated. We ourself have calibrated monitors with adobe gamma. This is the way of progress and we hope the technology will achieve it one day!
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fromchina
2010-04-14 00:50:07