Setting up HDRI based lighting in Mental Ray

Hi all,
 In this tutorial we are going to look at how we can use  Final gather & HDR maps to create image based lighting scene.

Step1 :

This is the scene that i am going to work with, It's simple setup teapots with some architectural maps.
Ok lets' start first we need to create sphere to work as our environment , go top view  , go to primitive section create a sphere. make sure that it'l cover our scene fully.

Step 2:
Ok , lets apply texture to our sphere. to do that go to material editor ( press m) , select available slot and change it diffuse color and ambient color to black.

Step 3 :

Click on global illumination field, put the check mark and put a bitmap into self illumination field. Apply a HDR map as your bitmap , when importing the HDR map, put the check box in 32 color data field as shown below.

Step 4:

And assign that texture to our sphere.

Step 5:

To add more details to our scene, goto render settings ( press F10), and under Indirect Illumination enable Final gather. ( make sure that you have change your render as the mental ray) . make a test render ( press F9 ) , you can see much more realistic scene.

Step 6:

but we have lot of lights , to override this effect add Standard omni light in scene. make it intensity to lower value ( 0.2 ) .

Step 7 :
 To make more realistic . goto our final gather settings and we need to adjust some parameters to yield a high quality scene.

Step 8:

After some tweaks i get a following render output. Also further we can add some exposure control to our scene.

Step 9 :

To add exposure control goto rendering menu----> exposure control. choose mr Photographic Exposure control

Step 10 :

make some tweaks to parameters as shown in below.

here some example by using several HDR Images.

Create A Realistic Outdoor Scene using 3dsmax Daylight

Hi all,

In this tutorial we are gonna focus on 3dsmax lighting concepts. Learn how to use a Daylight system to make a realistic outdoor scene usind 3dsmax 2010.

Step 1:

first we have to add Daylight system, to do that go to create --> Lights -- > Daylight System.

Step 2:
Then you'l see dialog box appears, press yes. goto top view and click and drag , so first it'l draw a compass , once that finished we can drag out the sunlight source. Distance between light source and scene doesn't matter.

Step 3:
Select daylight source and goto modify panel.Under Daylight parameters click "setup".

Step 4:
Now , it'l bounces off to motion panel.Under control parameters you can adjust the position of the sun. you can give real word measurements.
My parameters:

Step 5 :
Also you can give your location. click "Get location" , then you'll see "world map" window, from that select your location.

Step 6:
To modify shadow, select light source and go to modifier panel.Under general parameters, change the shadow type to "Shadow Map".Under shadow map parameters , change parameters as shown in the picture to yield high quality.

Step 7 :
To adjust parameters , you need to do via "Exposure Control", to do that , goto Rendering menu -- > Exposure control

Step 8:
To have a realistic scene , we can adjust these exposure control parameters, i used following parameters.you can try different combination of these parameters.

Step 9:
After adding environment maps and textures.Here is the final output of our scene.A realistic outdoor daylight system.

Lightning Bolt Effect 3D MAX

Hi all,
 This is a 3d max particle flow tutorial , i'm going to create lightning bolt effect using 3d max. Lets get started.

Step 1:
First go to particle flow.(Graph Editors----->Particle Flow  or you can press 6). look at the  following picture.

Step 2:
Right Click on the empty space , and  goto "New"----->"Particle system "-----> "Standard flow". Rename basic standard flow, "PF_Source01" to "Lightning Bolt".Change Display type to "Dot".

Step 3:
Goto Birth event , change emit stop time 100 and make sure you click on "rate" radio button , set rate value to 30,000.In order to get better performance ,put a "Cache View port"  operator into "Geometry" field.

Step 4:
Delete  "Rotation " event and "Speed " event. Put "Shape" operator  into global node by dragging "Shape" operator into "Render_Geomatry" field.

Step 5:
Right click on position icon ----> insert---->Position Object 01.Click on the "Add" button ,select geometry which ever you want( in my case its, tesla coil ,which is a simple torus ) .This will act as a originate point  of our particle system.Hit play button , now you can see particles are emitting from our tesla coil.

Step 6:
Next, we need to add some forces. Goto , Create --> Space Warps --> Forces --> Wind  & Drag. Add both forces into perspective view.Select both force icons and change co-ordination  to (0,0,0) as shown
below.

Step 7:
Select Wind force and goto modifiers panel and change the parameters as shown below. Strength - 3.5 ,Turbulence -4 , Frequency - 2.0 , scale - 0.2 .


Step 8 :
Select Drag force and goto modifiers panel and change paramters as shown below.on time - 0 , off time - 150, z axis Strength- 18

Step 9:
You can place your particle source(tesla coil)  where ever you want. In this tutorial i use ( x=0, y= 100 , z= 200).



Step 10:
Then we have to link forces to our particle flow. To do that goto particle view ( press 6 ) , Right click on our Event_01---> Append --> Operator --> Force. Select force operator, on the right panel click on the add button , and select the two forces.

Step 11:

We don't want to remain our particle till the last frame, so append a "Delete " operator into our PF_Flow and change the parameters as shown below. Life span = 7, variation = 0.

Step 12:
Next , we need to create branches from our main Lightning branch, to do that right click on our main event---> Append --> Test --> Spawn.

Step 13 :

Select "Spawn " operator and change the parameters as shown below.

Step 14:

Do a Shift Drag to "Display" Operator and make a copy of  "Display" Operator. Rename this event as "Branch".

Step 15:
Connect "Spawn event and our new Display Operator" .

Step 16:

Add a new "Delete Operator" to out Branch event, set the life span parameter to 1. To give more realstic look we can add second 'Wind" force and link with out "Branch_Event" as we did to our main event.

Step 17 :

Finally we have to add a Glow to our particle flow, to do that right click on our main event and goto properties. Give object ID as 1.

Step 18 :

Goto Rendering Menu --> Effects. Under Effects tab add "Lens Effects".

Step 19:
Under "Lens effects Parameters ", add a "Glow" ( select glow from left panel and click on the right arrow)

Step 20 :

Select "Glow', and then you'll see a new panel called "Glow Element" and change parameters as shown below.

Step 21 :
Under the "Glow Element" window goto "Options tab" , make sure that you have checked "Object ID" radio button. give Object ID value as 1 ( This should be same as the main event object ID)

Step 22 :

Here's the final output.