The Mental Ray Camera Tag
To enhance your Mental Ray rendering skills, it's not
only important to learn how to set Final Gather and illumination, but
also knowing how to set up the camera.
Mental Ray Lenses
In Mental Ray you can use lenses connected to a camera to improve your renderings. In this tutorial I'll explain how to use one of the lenses in Mental Ray.
How Lenses Can Help
These are not lenses to make a fish-eyed camera. These lenses allow you to adjust exposer and sampling and others. These can help you improve the final Mental Ray rendering.
Step one - Download the scene dark.mb.
Step five - Select persp in the outliner. This is the camera that we are looking through by default.
Applying The Lens
Step one - Select the checkered icon beside the field lens shader.
Step three - Click on the Mental Ray tab Mental Ray and find the tag lenses. The lens we're going to be using is Mia_exposure_simple. This will make our dark room look lighter. Set the gain to 1.3. Render it.
If you noticed, the room looks much nicer. But of course you could have done it in post production. If you're familiar with post production, you'll recognize a lot of the attributes names. Whenever I use this in a scene, I normally only need to set the gain and the gamma.