Twilight and Hypershot
-
I know nothing about car photography, so I just guessed how a real car studio might look and tried to reproduce it in SketchUp. This render took 6 minutes with Twilight 1.0.6 on my ancient Core 2 Duo E6300.
To render, I used a modified version of the "High" preset. You can find this preset here inside the "AA Extra Pass" folder:
http://twilightrender.com/phpBB3/viewtopic.php?f=12&t=397Original model from the warehouse:
http://sketchup.google.com/3dwarehouse/details?mid=ef23d97b3aac7779f43db49cede9f847&prevstart=0And the SketchUp file after I added some material templates and created the "studio". I repeat this is just a dumb attempt. If someone knows something about car photography, please chime in.
-
OK Pilou, here's another try. After some Google searches I found out that people often use large "softboxes" to photograph cars. So I put two large emitters around the car, and also made the floor shine. The setup is now simpler than my first try.
-
Won't these really large emitters make rendering time considerably longer?
How about a point light in front of them instead (maybe the light itself being somewhat blocked to cast direct light onto the car)?
(Note that I am a total noob in these questions just trying to learn from the more experienced and asking only)
-
OK, thanks. Useful info indeed!
-
Cool result
-
@gaieus said:
Won't these really large emitters make rendering time considerably longer?
As a sidenote to what Miguel already have said, it's perhaps worth mentioning, that it also depends on how the emitting mesh is made...
The more faces you have, the longer the render-time will be, since the computer will need to calculate so much more...The below image is taken from the KT2008 Getting Started tutorial, but it applies for all render applications I know of...
-
Yes, I am aware of this triangulation issue (but of course, it can never be repeated enough so thanks for updating our minds). Miguel used two rectangles up there however and they would count only for four emitters this way.
BTW after all those emitters won1t be seen anyway, could you use two triangles instead without noticeable difference in the result?
-
@gaieus said:
BTW after all those emitters won1t be seen anyway, could you use two triangles instead without noticeable difference in the result?
The difference between 2 or 4 mesh emitters, won't be significant...
-
The last image above took around 11 minutes in my Core 2 Duo. After some experiments it seems to me that you can use large emitters freely if you're going to use a progressive render method, and that's what I did here. Actually, it seems that the more and stronger light sources you have, the sooner a progressive render gets rid of noise.
¿Remember the neon chair? I finally got tired of trying to get it right with Photon Mapping (Easy 01-04). I tried using a combination of fake emitter/invisible emitter, tried with different antialiasing settings, but at the end I discovered I got better results in comparable times by just using a progressive method (Easy 09), which does not accept "fake" emitters, but doesn't need them, really. So from now on, whenever emitters are involved, most of the time I'll just go progressive.
EDIT: I'm trying to stop doing these Lambo renders...
Sky from cgtextures.com -
@frederik said:
The difference between 2 or 4 mesh emitters, won't be significant...
This is true of progressive render methods, but it matters a LOT with Easy methods 1-7. The time difference is most in methods 1,2,& 4 (the fastest settings)
Advertisement