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davidbrinnen — Bryce Pro TA gels and IBL practical use - tutorial
Published: 2012-08-30 15:13:20 +0000 UTC; Views: 1943; Favourites: 17; Downloads: 44
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Description
Bryce 20 scene lighting project - Using IBL with boost light and TA gels - by David Brinnen*WARNING*, this is advanced stuff - and quite boring.
Putting what has been discovered so far with TA gels, boost light and IBL into practice to generate a controlled lighting environment and very high quality light simulation.
As with all my video's I welcome feedback, but please take into account who this video is intended for.
Some additional text is included in the video, you may have to pause the video to read it.
Better viewed in HD - some of the controls in Bryce are quite fiddly and small.
For more tutorials visit [link]
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Comments: 9
Looked at your lesson, David. Thank you.
I've done some experiments. Will try to explain in my crooked English.
1. It is unclear why this card to use HDRI and IBL. You can just make the sky black or off the atmosphere and make the background white, gray, black, etc.
2. The use of the light source options "True Ambience Optimization" off the source (this is a glitch programmers?)
3. You have found an ingenious way to enhance the lighting in the scene with the Radial Light, appointing him the material: Mode Normal, Ambience 100, Transparency 100 and gel texture.
4. You have found an ingenious way to increase the brightness of the scene more than doubling of the source and reduce its size. 3 sources of the same size and location do not amplify the light!
5. BUT! In fact, in the scene you do not have a source of light! Try to convert Radial Light in a simple sphere and you get the same result!
6. Moreover, as the gel can be applied as a texture image, and procedural. Interesting results can be obtained with the regime "Blend Transparency" and texture in channel Diffuse. In this case, you can change the channels Diffusion, Ambience and Transparency, and painted the scene using the channel "Volume".
7. If you convert Radial Light in sphere, you can get interesting reflections on metal and mirror materials. The sphere should cover the whole scene with the camera.
I have done experimental work with the atmosphere, the sun, TA and the sphere as an additional light source. Soon I'll show it.
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I confess I am struggling with your crooked English - so if I don't answer your question in the way you need. Do ask again in a different way.
1. Sky colour is low dynamic range - it cannot generate the same level of effect as needed to drive TA.
2. True Ambience is an almost entirely untested feature and undocumented feature.
3. Once the radial light is in TA mode it is not a light but a 3D surface - a shell if you like.
4. In TA mode, if the shells are transparent to TA they can be nested to increase light.
5. If you mean any material can act as a TA light source - yes, but the radial lights are invisible to the camera.
6. Agreed - volumetric materials also but be aware volumes + TA can = crash.
7. I look forwards to seeing your experiments.
OK I've answered your questions as best I can, but as I said, I might not have grasped your meaning, so please feel free to ask again if I've missed your point.
Cheers,
David.
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Apparently my electronic translator is unable to cope with their responsibilities.
1. "Sky colour is low dynamic range" - it's all clear.
From my experiments, it follows that if TA, character Bryce Sky HDRI lighting does not differ from the usual Bryce Sky with sun. TA already gives a high dynamic range. In addition, if the sun is disabled, there is a problem with Specularity. Additional Radial Light (or sphere) only increases the brightness of the scene.
2. Clear.
3. I understood directly it.
4. It too is clear.
5. "Radial lights are invisible to the camera". Yes, the material of the shell of the sphere is visible in the background. But it can be useful as an alternative to HDRI background. True, the image resolution should be very large. But the bright spot of the Radial lights also seen when light reaches the boundary of the field of view. In this case, a simple trick helps. I increase the size of Radial lights (or sphere) to 102 400 BU. And all artifacts disappear behind the horizon.
6. I did not mean "volume material." I mean, that the presence of the image in the channel "Diffuse" and change the color of channel "Volume" can provide additional color into scene, reflection, and other interesting effects.
7. Here example of my work [link] .
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1. Horo spent a lot of time calibrating the intensity of the Bryce sun with HDRI use sky captured Bryce sun.
2. Good.
3. Good.
4. Good!
5. Yes, but be aware that two "shells" of TA radials should not co-exist in the same exact space otherwise the render cannot resolve the surface geometry properties correctly.
6. Ah... that is an interesting finding... using diffuse images through metallic effect into reflection... good thinking! I like it!
7. Looking good, very nice ambient generated shadows. The render time was also good for the resolution.
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Looks very promising, I've commented my thoughts directly on the image. I did see the link on Bryce5.com but I've been out working and I am just catching up with the backlog of computer tasks. I don't know why it would not upload.
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Hello
You've been featured in my weekly 3D Objects Poll .
Have a nice day
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I thought it was a photo, which should count as success ( even though, yes, it's rather boring )
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Thank you, yes, the next image I make with this will be less boring and more "dragon...y".
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