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Old 04-07-2007, 09:53 PM   #1
ColdWave
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Default HDRI

Well i follow
-> http://en.9jcg.com/comm_pages/blog_content-art-10.htm
this tut but really i don't get all the point of how HDRI work and what exactly it is .. can someone explain in a few words but to be understandable ... i see that my ball reflected the image but as u see in my Render image i don't get the effect which the man in tut get ... and im asking my self why ... i follow every step of the tutorial and i can't find what mistake i made .. maybe it's the point of not mentioning about how must i set my Mental reay settings ?
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Old 04-07-2007, 10:28 PM   #2
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Default Re: HDRI

Originally posted by ColdWave
i see that my ball reflected the image but as u see in my Render image i don't get the effect which the man in tut get
I have no idea what youÕre talking about. Yours looks just like his. Care to explain?
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Old 04-07-2007, 10:33 PM   #3
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Well as i learn from HDRI tut -> is reflection from HDR pic when i set it to my half sphere .. and it reflected to my ball ... ? And what was the point ... Like i see in this forum with HDRI are made brilliant things like 50 % realsitic things I really looking for that effect like "Keys" in W.I.P . I think there is used again HDRI ...
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Old 04-07-2007, 11:01 PM   #4
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You got me pretty lost now. The only thing I could suggest is to ask Minstrel what his render settings were.
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Old 04-07-2007, 11:09 PM   #5
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Simple : What is the function of HDRI basicly
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Old 04-07-2007, 11:15 PM   #6
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Render out that image without the HDRI, and then compare them, and then you will find out the difference.
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Old 04-07-2007, 11:50 PM   #7
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you don't have shadows enabled... are you even in mental ray???

once you are in mental ray, if you're in Maya version is 6.5 or above, there is actually a button to set up the dome.
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Old 05-07-2007, 12:59 AM   #8
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HDR images are used to ight the scene, I.e they give off light that then interacts with your objectsgiving it the look of it being in the environment.

What I think your not doing is swithcing on final gather
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Old 05-07-2007, 04:02 AM   #9
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i Turn FG on and here is the result :headbang: :headbang: :headbang: :headbang: I don't add any light and i disable the defult light ... wtf ...
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Old 05-07-2007, 04:03 AM   #10
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Here are my settings
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Old 05-07-2007, 04:04 AM   #11
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0
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Old 05-07-2007, 06:26 AM   #12
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You need to turn down the colour gain on the HDR image (look in the place 2d file node.

Its not as easy and just applying a HDR and bingo its going to work, you need to play with the settings, to fine tune it.
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Old 05-07-2007, 10:00 AM   #13
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first of all, your using 8.5,

just go down to the environment tab (in the rendersettings at the bottom) and enter in the HDR image, and get rid of the half-dome you created.
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Old 05-07-2007, 05:03 PM   #14
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I'm using maya 8.0
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Old 06-07-2007, 12:33 AM   #15
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my mistake, haha, either way there is a button to make it for you.

in the render settings, its in the image based lighting section in the render settings window.
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