A mental ray exercise

# 1 06-06-2003 , 11:49 PM

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I have been wanting to take a good look at Mental Ray since I got Maya 4.5, so this is a small exercise I did for myself. As an idea, I used an image in the magazine "3D World".
This is done only with caustics. I was trying to mix caustics and final gather, but after 2 and a half hours it was still crunching, so I stopped it. Maybe I'll launch it tonight and see what happens tomorrow morning...

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# 2 08-06-2003 , 03:44 AM

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I like it. When I try caustics i just get a bunch of white dots. I tried raising the photons but that just made more dots, but I dont know.

Yours looks good except that the orange looks too rough.

mahalo,

Myk

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# 3 08-06-2003 , 04:10 AM

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What I did was look on the Internet for tutorials, then I wrote down step by step what to set and what difference it makes. It may sound silly, but I keep it next to the computer for reference.
You are right about the orange. Thanks for the comment!

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# 4 09-06-2003 , 10:02 PM

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Here is another render with final gathering and some change in the caustics parameters. I also changed the textures of the table and the orange to make them more realistic.

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# 5 13-06-2003 , 12:50 AM

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I have added some more reflections using HDRI. I think that looks better especially the spoon.

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# 6 14-06-2003 , 08:47 PM

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Is there nobody that wants to comment this? user added image

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# 7 15-06-2003 , 04:02 AM

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I really do like now, but I dont't know if it is because of the image compression or because of the testilation, but the plate looks a little rough around the edges.
Also try softening the shadow.

mahalo,

Myk

<a href="https://www.metic.net" rel="noopener noreferrer nofollow" class="giveMeEllipsisa" target="_blank">www.metic.net</a><br />

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# 8 17-06-2003 , 05:03 AM

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Here is a new version with softer shadows and global illumination. Strangely it keeps having this spotty appearance even though I the parameters, like number of photons, accuracy, etc, are very high, so high in fact, that half of the times I render it it crashes... I also set a higher anti-aliasing quality.
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# 9 17-06-2003 , 08:55 AM

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wow, now that's cool...

you did a very good improvement ... I really like it! Now make a table so they dont float in air... user added image

(or you can composite it on a real picture.. it'll be tricky but it'll turn out good)

-Emo

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# 10 17-06-2003 , 07:11 PM

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Compositing one from a picture? Now that is a GOOD IDEA!!!
Don't you tink it is a little spotty, like right under the orange? Changing number of photos and accuracy doesn't seem to make any difference...

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# 11 23-06-2003 , 05:59 AM

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I have changed something, trying to refine it.

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# 12 23-06-2003 , 01:09 PM

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the glass plate is a bit too light in last render. it is too reflective and letting not enough light through. maybe highering the translucense helps - not sure though if mr supports that with photons.

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A mental ray exercise

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