PROPER atmosphere effects

Wed Mar 23, 2016 5:15 pm

hi at all,

important is that you play after you link for example a hdri as input in the octane scatter medium node (input is absorbtion and scattering) that you go in the node and play with the density...also you have to play with the medium range in the DL Environment if you link the hdri as texture in there...

happy rendering!

here also as anim seq...

https://youtu.be/CKLZdl0E0Nw

snip lwguru

Wed Mar 30, 2016 3:41 pm

First of all, love the renders! I think I saw them on facebook first...really amazing stuff!

Just loaded up O3.0 Alpha and am playing with it. Trying to get an exterior to have just a hint of scattering in my scene. Good news is it doesn't seem to affect render time much...bad news I'm not able to get it to feel like it's non-existent near the camera and falloff or intensify in the far background. Have played with many combinations of Phase and Density along with color of Scatter.

Any guidance on what your values were in your scene might help steer others....thanks again for sharing your work!

Wed Apr 06, 2016 8:22 pm

3dreamstudios wrote:First of all, love the renders! I think I saw them on facebook first...really amazing stuff!

Just loaded up O3.0 Alpha and am playing with it. Trying to get an exterior to have just a hint of scattering in my scene. Good news is it doesn't seem to affect render time much...bad news I'm not able to get it to feel like it's non-existent near the camera and falloff or intensify in the far background. Have played with many combinations of Phase and Density along with color of Scatter.

Any guidance on what your values were in your scene might help steer others....thanks again for sharing your work!

hi

check out the meter number in the node "day light environment" ..."MEDIUM RADIUS"....or in "Texture Environment" ...also MEDIUM RADIUS"...

snip lwguru

Thu Apr 07, 2016 2:17 pm

Yea I was playing with those...but it seemed like it was doing just the opposite of what I wanted. Meaning it was strong near camera and faint the further the objects were.....which is not what would happen in the real world. I'm sure I'm just doing something wrong.

When you set your scene up could you make the fog/atmosphere quite dense in the back....or is it simply a subtle EVEN amount throughout the scene.

What I would like is a faint fog near and very strong far away.....

Thu Apr 07, 2016 2:58 pm

ok found something that seems to work decent, will begin to play with this in a full scene to see how it goes. Here are my settings for others to test...

First tree is about 30' away...second is about 100' third is 240' and last tree is about 500' away.

Hook a Scattering Medium to Environment:Daylight. Set Scattering color to 008,008,008. Density .1 and Phase .5. Under Environment:Daylight node set the Medium Radius to 600' you should see something similar to what's shown here if your distances are similar.

This is a nice add for Octane 3.x!

Thu Apr 07, 2016 4:24 pm

3dreamstudios wrote:ok found something that seems to work decent, will begin to play with this in a full scene to see how it goes. Here are my settings for others to test...

First tree is about 30' away...second is about 100' third is 240' and last tree is about 500' away.

Hook a Scattering Medium to Environment:Daylight. Set Scattering color to 008,008,008. Density .1 and Phase .5. Under Environment:Daylight node set the Medium Radius to 600' you should see something similar to what's shown here if your distances are similar.

This is a nice add for Octane 3.x!

yeah thats the right way!

snip lwguru

Thu Apr 07, 2016 7:48 pm

3dreamstudios wrote:
This is a nice add for Octane 3.x!

yep...here i explain the roots for beginners...

https://www.youtube.com/watch?v=-hn-72N ... e=youtu.be

snip lwguru

Thu Apr 07, 2016 10:27 pm

Hey, thanks 3Dream! I hadn't spent a ton of time on this, but I was not getting good results the little that I did. This is a big help! Yoo da man!

Yo Guru, I'm not sure how you (and some others here and there) are placing your images in posts, but every time they are embedded at full/huge res, and it is a pain to try and read text off to right. Are you able to place them in a way that they need to be clicked to see full res? That would be helpful. Don't laugh, but I'm still at 1920x1080 - have not made jump to 4k yet...

Sat Apr 09, 2016 8:04 am

FrankPooleFloating wrote:Hey, thanks 3Dream! I hadn't spent a ton of time on this, but I was not getting good results the little that I did. This is a big help! Yoo da man!

Yo Guru, I'm not sure how you (and some others here and there) are placing your images in posts, but every time they are embedded at full/huge res, and it is a pain to try and read text off to right. Are you able to place them in a way that they need to be clicked to see full res? That would be helpful. Don't laugh, but I'm still at 1920x1080 - have not made jump to 4k yet...

check please your browser. the forum software resize all pictures normaly automaticly. i see here only correct postings. and i sit here at time in front off a laptop with 1366x786 Pixel.

if i will see here a picture bigger i click on it....its not per default that he show the pictures in full hd

snip lwguru