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www.zaluu.com www.zaluu.com Caustics are really great light effects that you can observe in liquids, glass objects and gems. We are able to simulate this effect with 3D Studio Max perfectly. This tutorial about Caustics will work only if you enable Mental Ray”! (This tutorial was made in Max 8). Step 1: Let's Create a small room like on image 1 (try to do that in realistic sizes, it is important that you make the setup of the unit system , only in this way Mental Ray will give you an optim
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   Caustics are really great light effects that you can observe in liquids, glass objects and gems.We are able to simulate this effect with 3D Studio Max perfectly. This tutorial about Caustics will work only if you enable Mental Ray”! (This tutorial was made in Max 8). Step 1: Let's Create a small room like on image 1 (try to do that in realistic sizes, it isimportant that you make the setup of the unit system , only in this way Mental Ray will give youan optimal end result since it will consider all measurements of the objects in the scene for thefinal rendering).Now create your lights to illuminate the room.There are several techniques to create a correct illumination. In the case of the room I havecreated 3 long free area lights like on below image (you can find them under photometriclights).   Step 2: Place them under tree long boxes. Select the bottom polygons of the boxes and assignthem a white self illuminated material like below image.   Step 3: To get a more realistic illumination I have enabled Final Gather in indirect illumination .I put a quite high number in samples to make the final rendering (600).   Step 4: After you made the room you must create the water. We can do that with a simple box.To create the small waves on the surface you have different possibilities (or with a material or by polygons). For transparent water material creates a Raytrace material (it must betransparent and a bit reflective). To create a wave effect put in the bump map a noise -mapwith a quite small size; to simulate trough geometry deformation the noise/wave effect you mustapply to the box a noise modifier . The wave size will influence the caustic shapes. Bigwaves/noise = Big caustic shapes! After you made all the objects you must create a MR Area Omni light on the top of the water inthe center of the room like step 2 image. Now make a right mouse button click on the MR. AreaOmni and disable AFFECT SPECULAR and AFFECT DIFFUSE . Get a more realisticillumination I have enabled Final Gather in indirect illumination . I put a quite high number in samples to make the final rendering (600).
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