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3ds MAX Tutorial :: Advance Illumination in 3d Studio Max [page 2]
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We can have a better result with a few more steps...Let's create two big boxes. Like showen in image below

Create a white self-illuminated material and apply it to the boxes.If you make a rendering you will see a big difference between the image below and last rendered image.

The reflection of this boxes are giving the impression of two light sources like windows or big white panels which are used also in the field of professional photography. You can notice that image second last rendered image is a little bit darker than image above, even I did not change the light settings.Why this ? Whenever you enable final gather you will notice that self illuminated objects are able to create light. The bigger your self-illuminated object, the brighter the surface close to it will be. That's why the rendering in above image is a bit brighter. Be careful with the size of the 2 boxes, don't make them too big and don't place them too close to the teapot, otherwise you will create too bright areas.

At this point you can do a final rendering.This means you must set all settings to the maximum values,in this way you will have a perfect rendering.In the render panel set Minimum samples per pixel "4", maximum “16 ”. If you change the BOX filter to "Mitchell" your rendering will be a bit sharper. The minimum size of a final rendering should be 1024*768 pixels (bigger is of course better). Don't forget to increase the shadow samples (area light sampling) to 32 or better 64, in this way your shadows will be perfect. Put in final gather sample slot 300,if this is not enough put 400. Now make your final rendering.

The result of above image is already very good, but we can improve it. I also teach to my students that Photoshop is a tool which is able to improve a rendering in many different ways. Let's apply a glow effect to our highlights (in our case we will assign a glow effect to the reflected boxes on the teapot to give the impression that there is a lot of energy coming from the white panels). Select the "magic wand tool"to create a mask on the brightest parts (which are in this case the white boxes)of the teapot surface like on image below.

Now press on your keyboard CTRL+C and than CTRL+V (copy and paste).You will see in the layer panel (F7)that automatically you have created a new layer on which there is only the masked part of the teapot. (Check image below)

Now make a left double mouse click on the blue bar of the new layer.You will enable a window (layer style panel) with really great tools (try them,they are really interesting). Choose "OUTER glow"and change the yellow glow color to white.Now select the size slider and move it to the right side.Now you have a very nice glow effect on the teapot. Another very interesting effect that you can create on a image is a Depth of field effect (DOF).In this way you can simulate a sharp focus point on the teapot.The part of the object which is far away will be a bit blurred (like in photography). First of all we must fuse the background image (original rendering) with the glow effect layer. Just go to "layer"and select "flatten image" (Check image below ).

Now make a right mouse click on the layer and choose "duplicate layer". Check image below.

In this way you will have two layers,one is the perfect copy of the other.Apply on the copy a gaussian blur effect (check images below).

The last step is very important.Choose the "eraser tool"and delete the part of the image which should be sharp (Check image below ). Try to use a soft brush and set it to opacity 60.

Author: Mario Malagrino
Website: www.MarioMalagrino.com | Florence Design Academy
About Author - CG Artists Mario Malagrino is a 3ds Max Instructor in Florence Design Academy.

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