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kobaltkween — Material Basics 02: Matte
Published: 2013-12-07 08:48:48 +0000 UTC; Views: 1918; Favourites: 9; Downloads: 54
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Description
Simple P9+ matte material using the Fresnel_Blend node. For earlier versions of Poser, you can fake the Fresnel effect with Edge_Blend. You can only do it very roughly with a single Edge_Blend, but you can do more with Math nodes. If you use Bagginsbill's Matmatic to code part or all of a material, you can use his accurate Fresnel approximation.Part of my Poser Material Basics tutorial.
Credits
ES Candy for Dawn by EyeStorm (Renderosity)
Ysaris Hair by AprilYSH (DAZ3D)
Guardian Lion Statue by the hankster (Renderosity)
Dawn by HiveWire3D (free until the end of this month, just uncheck the other products if you don't want them)
ShortieDress04 by paganeagle2001 (free, HW3D forums)
Environment Sphere by Bagginsbill (free, his Google site)
Related content
Comments: 15
I never thought of using Fresnel on a matte material. I thought matte was just ... matte ...
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The more matte something is, the stronger its Fresnel effect. If you use Blinn for specular, it has Fresnel built in.
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The Diffuse shader in Blender Cycles has a Roughness setting. Is that the kind of thing you’re talking about?
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No. That's just the diffuse shading. Blinn is a type of specular shading, and specular is fake reflection. In real life, matte items still reflect, just so soft and blurred that we don't think of it as a reflection. And the more matte the item, the higher the blur, stronger the Fresnel effect, and weaker the reflection. You can probably get away with ignoring it in many or even most cases that aren't obviously reflective, but to be accurate, something rough and not very shiny should still have a very blurred, very weak reflection with strong Fresnel.
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So that would be mixing in some Glossy shader in with the Diffuse, then.
And Glossy has its own Roughness setting.
I thought Fresnel had more to do with how the reflectivity varied with the incident angle.
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Oh, this is just one in a series for a journal post I'm making. I should be done in a few hours or so. Mainly need time for rendering.
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Okay, I'll be watching...
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Finally finished it last night! The Refraction one took a while to render twice, and I dithered over the SSS one for a while. I hope it's some help to you. While a lot of it is deliberately Poser specific, like texture filtering advice, I use the same basic material (and light) approach in Cycles and LuxBlend/Luxrender. That's why the only problem I had in Lux was its glass and water centric SSS, and then only because my main focus with SSS is skin, not glass or water.
If this is popular, I may do one on lighting, too.
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Oh I saw that and I had it in my fave tutorial section... I will go over it in more details in the coming days when I have more time to sit and learn... I would like to see the one on lighting too... Like to see how people set up their lighting and borrow a few ideas off of them via tutorials. Right now, between caregiving and shopping for Xmas and house, (and rendering a few images for fun) time is limited. It's a challenge but I aim to overcome it, even if it means going to bed after a 48 hours marathon.
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Oh, I wasn't trying to rush you or anything! Just wanted let you know I _finally_ finished the journal piece and all the associated renders and posts. I hope things get a bit less hectic soon, though I know that's highly unlikely to happen until after Christmas.
The only thing that makes me pause about a lighting one is how much I depend on the tools I build for my photo studio. I may have to get that out first. Which seems more possible now that I've learned a few Poser tricks and realized I need to make the individual sets for it even smaller than I was first thinking.
Not for myself, actually. I did some pretty heavy market research and found that gallery citations indicated a high demand for light sets, but sales for light products appeared to be low. Looking into it further showed that by far most light sets were add-ons to pose and/or scene and prop sets. The lights that were cited often came with scenery, but the scenery was minimal and generic (in the sense of being fairly neutral, not low quality or unoriginal). My photo studio is already pretty general, but I've got several sets worth of props for it. Pose boxes and columns, makeup tables and stools, changing area, open and closed drapes for the windows, vents, wall sockets, etc. I realize now that first set should just be an environment for ambient light and reflections, the room, the cyclorama, and the first set of lights.
Sorry. More info than you needed. The issue with a lighting tutorial being that I have a lot of work to do to make the first studio set into a product, but I'm not sure I could do a tutorial that didn't use those tools.
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I see. So what not just cover the very basic of lighting... sort of a photographer's basic intro into lighting technique, so matter what is used, the principle is the same?
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To put it simply, area lights. They're an important and basic component of lighting. Poser never got them. I've found IDL isn't enough on its own. Part of my photo studio set is different sizes and shapes of softboxes with parented pointlights for Poser rendering and plain versions for rendering in anything with proper mesh lights (Luxrender, Octane, Cycles, etc.). Spots, infinites, and points are very powerful, but incomplete without area lights. And softboxes are, as far as I can tell, a basic lighting tool for photographers.
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There you go! First mini lighting tut. Next you could describe with words and picture how shapes and sizes influences lighting and how to use them in setting up a scene in IDL or perfectly generic rendering.
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