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Old July 9th, 2008   #11 (permalink)
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Default Re: Problem Environmental Map rendering in Mental Ray

i learned something new today - thanks
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Old July 10th, 2008   #12 (permalink)
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Default Re: Problem Environmental Map rendering in Mental Ray

Personally I don't like using the haze channel in mr Physical Sky to produce the visible sky. I like the sky to be perfectly visible with all its color and sharpness. The 'haze' way is ok but you are trashing so much good information of the sky map since the haze does what it suppose to do - generate haze, which changes your sky's clarity.

Now, if you really like your sky to be juicy as I do try this: Switch the Physical scale in your environment to Unitless and set it to 75000. Place your sky map in the environment and set it up as in the image. Render.

You can see the difference generated from the same map while in the haze channel and as the method shown above. The one drawback with this is that you have to set the Daylight system intensity to match your environment map, which is not a big deal compared with the results.
Attached Images
File Type: jpg PhysicalScale.jpg (22.7 KB, 10 views)
File Type: jpg MatEdit.jpg (170.8 KB, 14 views)
File Type: jpg mr_Haze.jpg (44.6 KB, 12 views)
File Type: jpg EnvMap_01.jpg (44.4 KB, 16 views)
File Type: jpg EnvMap_02.jpg (40.0 KB, 12 views)
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Old July 10th, 2008   #13 (permalink)
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Default Re: Problem Environmental Map rendering in Mental Ray

Quote:
Originally Posted by daniohayon View Post
Personally I don't like using the haze channel in mr Physical Sky to produce the visible sky. I like the sky to be perfectly visible with all its color and sharpness. The 'haze' way is ok but you are trashing so much good information of the sky map since the haze does what it suppose to do - generate haze, which changes your sky's clarity.

Now, if you really like your sky to be juicy as I do try this: Switch the Physical scale in your environment to Unitless and set it to 75000. Place your sky map in the environment and set it up as in the image. Render.

You can see the difference generated from the same map while in the haze channel and as the method shown above. The one drawback with this is that you have to set the Daylight system intensity to match your environment map, which is not a big deal compared with the results.

That looks good, i think it is a good solution for daytime, but the haze works very good for sunsets and risings.

by the way, where is this nice tree from?

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Old July 10th, 2008   #14 (permalink)
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Default Re: Problem Environmental Map rendering in Mental Ray

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Originally Posted by uhofmann View Post
That looks good, i think it is a good solution for daytime, but the haze works very good for sunsets and risings.

by the way, where is this nice tree from?

Cheeers
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...unless you can find a real sunset map...http://www.cgtextures.com/ got some excellent maps. The tree is Onyx. I wanted to make a bonsai and this is a scaled version of that tree from the last Proxy experiment
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Old July 10th, 2008   #15 (permalink)
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Default Re: Problem Environmental Map rendering in Mental Ray

You can also up the output of the haze bitmap to 25+ and its just as strong.
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