Glass Challenge (all render engines)
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@thomthom said:
Where's the caustic?
Are you blind...???
@escapeartist said:
I see some refracted light on the tabletop, especially on the rear-most glass.
Exactly...
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Thanks EscapeArtist & Frederik. I meant I would have prefered to have these caustics sharper, like in Thomthom's first image.
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@frederik said:
@thomthom said:
Where's the caustic?
Are you blind...???
@escapeartist said:
I see some refracted light on the tabletop, especially on the rear-most glass.
Exactly...
To me that just looks like reflected light. Not caustics. This is what I expect from caustics: http://en.wikipedia.org/wiki/Caustic_(optics
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@thomthom said:
To me that just looks like reflected light. Not caustics. This is what I expect from caustics: http://en.wikipedia.org/wiki/Caustic_(optics
Not sure why the link you've posted to Wikipedia doesn't give a result...
But I'm well aware about what caustic is all about...
And It sure isn't reflected light in that render... -
hmm.. it didn't convert my URL that well...
So caustics isn't the light effect you see in the images on that page?
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@thomthom said:
So caustics isn't the light effect you see in the images on that page?
Not sure what you mean, Thomas...
What I say is that it's caustic I see in the render Eulgrand posted and not just light reflections... -
I'm trying to work out what is the cautic effect in it. ...oooh... wait. is it in the shadow on the right side of the glass furthest in the back? Looking now it looks like some light in the middle of it. A very very faint effect?
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Thomas... The ironi in your post doesn't really suit you...
What is it you're trying to achieve with a post like that...???But yes... Although it's not a very clear caustic, it sure is caustic...!
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@frederik said:
Thomas... The ironi in your post doesn't really suit you...
What is it you're trying to achieve with a post like that...???But yes... Although it's not a very clear caustic, it sure is caustic...!
Sorry. That wasn't irony. I actually noticed it while I was typing up a question. I guess I should have edited the first bit. Didn't mean to come across as a jerk.
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No worries, Thomas...
You didn't offend me...Here's a couple I just did...
1st 1 min 6 sec
2nd 7 min 52 sec
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I think the reason why the caustics are that weak is because the scene is lit by HDR.
Sun light would definitely show more caustics imo. -
@kwistenbiebel said:
I think the reason why the caustics are that weak is because the scene is lit by HDR.
Sun light would definitely show more caustics imo.I think you have it there. Multiple light sources seem to have washed them out. If the scene was rendered with those glasses in sunlight, I'm sure they'd throw some nice caustics.
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Still an HDR studio (lazy me...) and sun (Soft shadows ON, radius = 1, Multiplier =1)
Preset 20 - MLT (BPT) - 50 passes
A bit of Neat Image-ing to remove noise.
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caustics for sure
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Let me give you caustic...
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Another try with Vray for Max. Modeling done by me as well. Thanks Ande for the tutorial...it was really helpful.
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Here's another Maxwell rendering. Nothing special going on, this is simply the default glass material and water (default, meaning made through the Wizard via studio).
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A lot of these renderings have been really great. I think for the next thread it would be interesting if there were more of a benchmark. Ideally, a real photograph along with the setup (light & camera positions as well as information like wattage, type of light, camera settings, etc.). It would be interesting, after having seen all of these examples, to get a better idea of accuracy as well.
-Brodie
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I like the looseness of the challenge....it leaves a lot for interpretation. I do see your point about comparing apples to apples though.
I think a good one for the next challenge would be - Candle. I would be a good opportunity to see how render engines handle SSS in the wax and lighting tricks for the flame.
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Good idea.
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