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Audi R8

Posted: Sat Oct 29, 2011 11:52 am
by t_3
beeing my first car rendering (not! modeling) this is more a showcase of what you can put together in octane wihtin an hour, using just live db materials and a few tweaks; there are some glitches with the model and the materials i'm aware of, but c&c is gladly welcome...

Re: Audi R8

Posted: Mon Oct 31, 2011 10:07 am
by t_3
... another pose. and little improvement; there seems to be some problem with the normals? the reflections of the hdri enviroment should imo result in nice curves, instead looks unsteady here and there - this is visible on the hood, and would be even more visible on the windscreen (if there were any reflections):

edit: after looking at it for some time, i notecied something i have overseen yet; the reflection which crosses the hood has some sharp ending line, where the paint seems to go from reflective to a lot less reflective - any idea where this comes from?

Re: Audi R8

Posted: Mon Oct 31, 2011 10:12 am
by t_3
ps: i have read somewhere, that car photographers apply different pressure to the tires to have the car "lean" towards the camera; one nice advantage about renderings is, that you just need to dial one or a half degrees rotation in - and voila it already rests in this "jumping" position :)

Re: Audi R8

Posted: Mon Oct 31, 2011 7:02 pm
by gabrielefx
fantastic!

the dark one is superb!

probably fresnel effect could improve mica paint materials

Re: Audi R8

Posted: Tue Nov 01, 2011 9:26 am
by mbetke
I want it! :D

Re: Audi R8

Posted: Tue Nov 01, 2011 10:41 am
by teecee2107
Superb renders IMO. I don't see any problems with the reflections, the lightings are excellent, especially the darkest one.

Re: Audi R8

Posted: Tue Nov 01, 2011 2:02 pm
by hadouken
Great. I'd like to see a rim light on the dark one, just to separate it from the black BG. I really like the tires.

Re: Audi R8

Posted: Wed Nov 02, 2011 6:49 pm
by t_3
thanks for the replies; i finally sorted it out, aka "mind the normals" :) after correcting the normals of nearly all surfaces, the reflections are now like they should be! i also did some refinements on the model and added some missing parts; most of them hardly visible, but hey - you can at least feel them :lol: over seven million triangles now... there are still some flaws, like the arrangement of the led lights and the side windows (which are just planes and cause some weird refractions), but it doesn't look all that bad already :D

by the way, i recently spotted some r8 renderings in the main gallery, hope this isn't all to boring ;)

one last thing: i discovered a nice technique on the net, to get rid of that nasty fireflies - and as all images were rendered with filtersize set to 1 and with hotpixel removal turned off (i.e. set to 1), there were a bunch of them; documented that in the last pic: you need photoshop and the "dust and scratches" filter, set to 1 pixel wide and applied as much as necessary. can be used as a one-click solution and preserves a lot more details then octanes hp removal filter. if going for high end, it is even possible to use the masking tool and apply it with different strengths to different parts of the image (which i did on the wheel close-up); needs some time but the results are convincing imo.

now, here wo go:

Re: Audi R8

Posted: Wed Nov 02, 2011 7:05 pm
by dave62
looks as you love to drive fast backwards;)
...tires reversed
btw great work -keep up tweaking

Re: Audi R8

Posted: Wed Nov 02, 2011 7:11 pm
by t_3
dave62 wrote:looks as you love to drive fast backwards;)
...tires reversed
btw great work -keep up tweaking
hehe, you just earned ten points :)
how did you get it that fast? any experiences with tire textures only made once for all wheels?