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Thread: This might help ..... Go on and try some.

  1. #14
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    And here's some more. Now, someone has given my last post a 2 out of 10, which is either really good, or really bad. Which is it here?
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  4. #15
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    Those are outstanding Christer! I would only suggest changing the table/surface color - I would maybe do a neutral gray set and maybe a mid-dark green (like a pool table). Whish light and shadow setting did you use? Because that is very close to reality it seems to me. Good job!

    And glad you recommended Blender to Lightship - it isn't terribly difficult to use.
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  6. #16
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    Glad I could help If you want the light to bounce off things, you need to enable some sort of global illumination. That's pretty much it.

    I like using blender for modelling, but still don't quite get Yafaray. I'm using an educational version of Cinema 4D for these.

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    Last edited by ChristerMLB; July 1st, 2011 at 06:35 PM.
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  8. #17
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    Well done indeed mate these look great!, now all we need is for some folks to get on and try them out and post the results in here for all the world to see as practice shots. It really is worth doing some of these from time to time just to remind yourself how light settles on 3d shapes

    Long live the basics, and er shapes and stuff......... and lights..........

    come on folks have a go!
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  9. #18
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    Gave it a shot, getting the selection for some of the shapes was really hard. Most of these are fail... but w/e.
    "The whole point of practice is to do it until you can do it right." - dpaint

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  11. #19
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    Stickied. Thanks and I might have a go myself.
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  13. #20
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    You should be more aggressive with your title
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  14. #21
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    Sorry Jetpack

    I dont do aggressive any more! but I did change the title a little bit, is it better!?

    P.s. WOW I got stickied!! or rather we did Thanks again Christer, Good Job!!
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  16. #22
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    Speaking as someone with an M.S. degree in Computer Graphics, but who inexplicably doesn't currently own a 3D package ready to go, I can offer a critique on the rendering. To do what we really want here, you need to do a render with real indirect lighting - what is often (slightly incorrectly - in that it sometimes lacks caustics) called "global illumination". Mental ray can do that. It would also greatly help to use an area light, rather than a point light.

    Here is a raytrace without global illumination:

    This might help ..... Go on and try some.

    And here is one with it:

    This might help ..... Go on and try some.

    You really see the difference in the areas that are not directly lit. Observe the caustic created on the wall by the focusing effect of the glass sphere on the light. Note the color bleeding on the walls next to the darker tiles. And most importantly, notice all the ambient occlusion in the back, where things get darker near little cracks.

    Working in CG is actually the reason that I, who have only practiced drawing all my life, suddenly find myself, upon trying out digital painting, to be reasonably good at using color. The artist actually has to ask the same sorts of questions that the computer does - which really shouldn't be surprising. The trick is to think of a single point on any surface and then ask what the entire scene looks from that point looking straight out. The average of all the color coming in at that point will be the diffuse lighting value.

    If this CG way of thinking is helpful for any of you other artists, I can try to explain in more detail - but fundamentally they are the same concepts folks talk about here.
    Last edited by thegiffman; July 7th, 2011 at 09:11 AM.
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  18. #23
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    Actually, the classic "Cornell Box" - the basic global illumination demo scene - would probably make a great drawing exercise. Here are a couple - have at em!

    This might help ..... Go on and try some.
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  20. #24
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    Hey, thanks for the sticky!

    This one is more about perspective than lighting. I hope it's useful:
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  22. #25
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    Awesome thread, Added it to my Tutorial thread. Cheers
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  23. #26
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    Hi, nice renderings.
    Reflected light is something that still gives me trouble.

    For example the sky, a strong blue sky affects the shadows of an object pretty strongly, but how far, does it get blue only in the shadows that are faced to the sky? And how does it change values? I would guess that its still darker than the dark parts in the direct light, but still higher in value than the shadow without the reflected light.
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