Join Brian Bradley for an in-depth discussion in this video File gamma and unit handling, part of V-Ray: Control Color Bleed in 3ds Max.
- [Instructor] Although the handling of both system and file gamma options has in recent years been greatly simplified in 3ds Max; there is still a chance, should we be working with a version of Max that has been set up in a non-default way, that we could encounter this gamma mismatch warning dialog as we work with the provided scene files for this course. The dialog is simply 3ds Max's way of telling us that the gamma settings saved in the scene file we are loading differs from the settings currently at work in the application itself. To make certain that what you see in 3ds Max as you work matches the visual presentation found in these videos, which have all been created using 3ds Max's default gamma settings or when you do we select the adopt the file's gamma and LUT settings option and all should be fine.
If we do by mistake go ahead and select the wrong option here, we don't need to panic because switching gamma options inside 3ds Max is a simple and straightforward process. All we need to do is come to the customize menu, select the preferences option, and then in the gamma and LUTs tab of the dialog, set gamma to be enabled, making sure that the gamma value is set at 2.2 and also ensuring that both boxes in the materials and color section are checked. Another warning dialog that we could run into is one connected to both our system and display unit setup.
As a general rule, we typically model all of our scenes to scale here using the metric system. If you then have 3ds Max set up to use its unit defaults, you will probably run into this particular error warning. Thankfully the fix again is simple, as all we have to do is choose the adopt the file's unit scale option. Now unlike the gamma option that we have already looked at, the consequences of making the wrong choice here can be a bit more significant, as adopting the rescale objects option can oftentimes lead to some fairly serious scene scaling anomalies.
To reiterate then, the option we always want to choose while working with the scene files for this course will be adopt the file's unit scale. Once we have done that of course, we will need to remember that when working on projects of our own, assuming we don't want to work in the metric system; we will need to open up the unit setting dialog, go into the system unit setting, and switch that back to using 3ds Max's default of inches, also setting the display units to whatever option we are most comfortable working with. If we follow through on these instructions, everything from the exercise files download should work just fine for us.
- Defining color bleed
- Controlling reflectance
- Understanding how geometry setup affects color bleed
- Choosing color placement carefully
- Using the Saturation Post-Processing control
- Adjusting the photon bounce limit
- Controlling color bleed with materials and object properties
- Using render elements