Tone Mapping: refers to the technique of adjusting the colours of the rendered image in a camera in order to bring them within a value range that looks better on a computer screen
This is usually used when using techniques such as IBL or physical sun. It is also used when using the mia materials. these are physically accurate and menat to simulate the materials in the real world.
2: go to cam under mental ray, click on the checker box of lens shader and select mia_exposure_simple
3: set pedestel to a negative level. It decreases the level, this adds black gain increases the over all brightness, so devrease gain. Knee is used for fine tuning.
2: rotate the light to make it look like early morning
3 rotate it to make it face the camera, eveningish
down - noon parallel to the horizon - late evening
the light attributes can not be controlled under the directional light options, to change the colour etc we must go to the mia_physical sky tab multiplier- increases or decreases the light intensity by the value haze- adds haze RGB shift - changes to warmer n cooler colour + wwarmer colour, - cooler colour to get rid of the horizon decrease the horizon height sun disc intensity increases the disc intensity sun disc scale changes the scale of the physical sun glow intensity changes the intensity of the glow the background is in the alpha so we can edit it in the compositing softwares
when we create a new camera our render shall appear more different than how it os supposed to look when rendered through that camera when we add the physical sky to the scene the cameras like the perspective ones shall add a mental ray shaders to it under mental ray tab environment & lens shader to fix this waht we will have to do is go under the mia_physicalsky1 attribute editor and then scroll to the very bottom and click on update camera connections