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    Glass Challenge (all render engines)

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    • E Offline
      Eulgrand
      last edited by

      Thanks EscapeArtist & Frederik. I meant I would have prefered to have these caustics sharper, like in Thomthom's first image.
      😉

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      • thomthomT Offline
        thomthom
        last edited by

        @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

        Thomas Thomassen — SketchUp Monkey & Coding addict
        List of my plugins and link to the CookieWare fund

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        • FrederikF Offline
          Frederik
          last edited by

          @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...

          Cheers
          Kim Frederik

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          • thomthomT Offline
            thomthom
            last edited by

            hmm.. it didn't convert my URL that well...

            So caustics isn't the light effect you see in the images on that page?

            Thomas Thomassen — SketchUp Monkey & Coding addict
            List of my plugins and link to the CookieWare fund

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            • FrederikF Offline
              Frederik
              last edited by

              @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...

              Cheers
              Kim Frederik

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              • thomthomT Offline
                thomthom
                last edited by

                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?

                Thomas Thomassen — SketchUp Monkey & Coding addict
                List of my plugins and link to the CookieWare fund

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                • FrederikF Offline
                  Frederik
                  last edited by

                  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...!

                  Cheers
                  Kim Frederik

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                  • thomthomT Offline
                    thomthom
                    last edited by

                    @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.

                    Thomas Thomassen — SketchUp Monkey & Coding addict
                    List of my plugins and link to the CookieWare fund

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                    • FrederikF Offline
                      Frederik
                      last edited by

                      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


                      Trefoil-KT-1m06sec.jpg


                      Trefoil-KT-HDRI-7m52sec.jpg

                      Cheers
                      Kim Frederik

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                      • K Offline
                        kwistenbiebel
                        last edited by

                        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.

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                        • EscapeArtistE Offline
                          EscapeArtist
                          last edited by

                          @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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                          • E Offline
                            Eulgrand
                            last edited by

                            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.


                            verres-5.jpg

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                            • K Offline
                              kwistenbiebel
                              last edited by

                              caustics for sure 😄

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                              • FrederikF Offline
                                Frederik
                                last edited by

                                Let me give you caustic... 😄


                                Trefoil-TW-3min32sec.jpg

                                Cheers
                                Kim Frederik

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                                • EarthMoverE Offline
                                  EarthMover
                                  last edited by

                                  Another try with Vray for Max. Modeling done by me as well. Thanks Ande for the tutorial...it was really helpful.


                                  Glasses_wires.jpg


                                  Glass_Liquids copy.jpg

                                  3D Artist at Clearstory 3D Imaging
                                  Guide Tool at Winning With Sketchup
                                  Content Creator at Skapeup

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                                  • brodieB Offline
                                    brodie
                                    last edited by

                                    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).


                                    water glass SL21.jpg

                                    steelblue http://www.steelbluellc.com

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                                    • brodieB Offline
                                      brodie
                                      last edited by

                                      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

                                      steelblue http://www.steelbluellc.com

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                                      • EarthMoverE Offline
                                        EarthMover
                                        last edited by

                                        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.

                                        3D Artist at Clearstory 3D Imaging
                                        Guide Tool at Winning With Sketchup
                                        Content Creator at Skapeup

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                                        • soloS Offline
                                          solo
                                          last edited by

                                          Good idea.

                                          http://www.solos-art.com

                                          If you see a toilet in your dreams do not use it.

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                                          • majidM Offline
                                            majid
                                            last edited by

                                            so sorry for long time ... i re rendered last scene


                                            z3Web.jpg

                                            My inspiring A, B, Sketches book: https://sketchucation.com/shop/books/intermediate/2612-alphabet-inspired-sketches--inspiring-drills-for-architects--3d-artists-and-designers-

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