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Arch horizon rendering help

PostPosted: Tue Feb 07, 2017 10:09 am
by Jukyan
i'm currently preparing animations where I have to render a large city from a sky point of view, with horizon visible.
I have a regular octane sunlight & a HDRI picture set as visible env. in a Environment Tag.

Problem is that I dont know how to make it look better, best would be a kind of atmospheric attenuation effect, but i need the less rendering costly option.
The camera is moving from very detailed in-city close-ups to the sky , so a fixed geometry doesnt work well...

I htought there must be someone out there who already had to figure out such issue...
I'm open to AE compositing solutions as well, but best would be smthing at rendering time.

Here is the current render look : /

Thanks for any help !

Re: Arch horizon rendering help

PostPosted: Thu Feb 09, 2017 1:11 am
by mojave
You could use an environment medium or if that slows down rendering more than you can assume, you could also generate a Z-depth pass and use it as a mask for compositing in AE.

Re: Arch horizon rendering help

PostPosted: Thu Feb 23, 2017 9:32 am
by Jukyan
I tried these :
fog medium is incompatible with my timing,
and Z-depth simply doesn't work...

Re: Arch horizon rendering help

PostPosted: Thu Feb 23, 2017 11:10 am
by bepeg4d
Hi Jukyan,
z-depth works as it should, just remember that the depth is in meters, and to export the pass in tonemapped mode.
Alternatively, you can add some concentric cylinders, or emispheres, or planes, with a diffuse light gray, and low opacity.
ciao beppe