Audi R8

t_3 · Sat Oct 29, 2011 11:52 am

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...

t_3 · Mon Oct 31, 2011 10:07 am

... 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?

t_3 · Mon Oct 31, 2011 10:12 am

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

Mon Oct 31, 2011 7:02 pm

fantastic!

the dark one is superb!

probably fresnel effect could improve mica paint materials

Tue Nov 01, 2011 9:26 am

I want it!

Tue Nov 01, 2011 10:41 am

Superb renders IMO. I don't see any problems with the reflections, the lightings are excellent, especially the darkest one.

Tue Nov 01, 2011 2:02 pm

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.

t_3 · Wed Nov 02, 2011 6:49 pm

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

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

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:

Wed Nov 02, 2011 7:05 pm

looks as you love to drive fast backwards;)
...tires reversed
btw great work -keep up tweaking

t_3 · Wed Nov 02, 2011 7:11 pm

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?