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The Realism Challenge - Biased VS Unbiased Showdown
Posted: 19 February 2013 01:14 PM   [ Ignore ]   [ # 121 ]
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I’m with Holly. If I can get the look I want without global illumination and the subsequent time hit, then I’m happy. The trick is being smart about your lights. The nice thing about Carrara is that you can throw a ton of lights at it, and it still renders quickly. The light settings and types of lights Carrara comes with are also very flexible. The large amounts of lights and their flexibility within a scene gives you the luxury of thinking about how to simulate a GI look. D/S and Poser may also have this ability, but since I don’t use them, someone else will have to speak about them.

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Posted: 19 February 2013 01:36 PM   [ Ignore ]   [ # 122 ]
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http://www.youtube.com/watch?feature=player_embedded&v=JWvgETOo5ek#!

I saw this video referenced in a Blender Artists forum post just now.  The poster was essentially making the point that maybe real time technology is already where we want to be in terms of creating CG still art and animation.  Perhaps waiting for more than a few minutes to render a complex scene is old and outdated.  Why are we still doing things the old way when “real time” rendering is now pretty advanced?

@ Rashad:  That was an interesting article.  Thanks for sharing.  Nice render you did, too!

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Posted: 19 February 2013 01:47 PM   [ Ignore ]   [ # 123 ]
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To be honest I don’t really understand the point of this biased vs. unbiased debate. They are different tools.

That said, I happen to prefer bouncy light and so far none of the examples of “faking it” have been quite good enough. It can be extremely difficult to achieve in some scenes.

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Posted: 19 February 2013 01:50 PM   [ Ignore ]   [ # 124 ]
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araneldon - 19 February 2013 01:47 PM

To be honest I don’t really understand the point of this biased vs. unbiased debate. They are different tools.

That said, I happen to prefer bouncy light and so far none of the examples of “faking it” have been quite good enough. It can be extremely difficult to achieve in some scenes.


It can be. But it is possible.

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Posted: 19 February 2013 02:10 PM   [ Ignore ]   [ # 125 ]
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To me, (purely personal opinion to follow), there is a key problem when rendering a figure in an unbiased renderer.

For architecture, cars or product renders I really like the look of the unbiased renders, a well lit scene can be beautiful and extremely realistic.

Conversely, the most perfectly lits scene with a figure in it will have the same level of realism but will reveal exactly what that figure is, which is a manikin with a photograph of skin plastered to it. They all look like posed cadavers to me.

That is not the fault of the renderer, rather it’s a direct consequence of the current level of figure modelling and their texturing. The unbiased renderer simply reveals the truth of what it is.

A biased renderer can be pushed to hide this limitation. Even there if you push the reality too far you will end up with a similar effect and if you get the skin to look perfect another element in it will probably break the illusion.

I tend to render with postwork in mind, where I push towards a more ‘airbrushed hyper-real’ style (hyper-realism as applied to painting not as others sometimes mis-use it to mean photo-realism). My galleries are in my sig if you want to see what I mean.

I don’t normally post photo-realistic but I’ll make an exception here. In this render you can sort of see how the illusion breaks on some elements. Given a choice of which way to go I’d rather pull back on the realism to get all the parts to gel together.

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Posted: 19 February 2013 02:17 PM   [ Ignore ]   [ # 126 ]
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To me it’s kind of like asking, “Is an SLR camera better than a point-and-shoot one?” The instinct is to answer “yes,” and it’s not hard to find lots of hard data as well as visual evidence to back up that theory. But just as one shouldn’t dismiss the point-and-shoot camera,* there are plenty of reasons not to discount the biased renderer. Some of the same reasons as in my camera comparison, including that it’s quicker, easier to learn (and arguably easier to master as well), less expensive…and of course sometimes lo-fi is preferable to perfect realism.

*In the hands of a professional or skilled amateur, any tool can yield spectacular results. Diverse point-and-shoot cameras like the Polaroid series, the iPhone, and the Holga all have their devotees, and each is responsible for many great looking images.

As far as I’m concerned, DS4.5 with 3Delight (which is what I used for the renders below—no postwork aside from cropping)  is more than “good enough.”

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Posted: 19 February 2013 03:33 PM   [ Ignore ]   [ # 127 ]
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This image is unedited, except for converting it to .jpg for the forums. It’s an attempt at simulating the look of GI. There are some issues with the scene and it’s lighting which prevent it from looking “real.” I think I’ve got the well and the building on the right lit well. I still need to light the two buildings on the left a bit to get rid of the deep shadows. I may have to do something with lighting on the pine trees as well.


I posted this to show that even an amateur like me can get some good looking lighting without rendering for two days. For those interested, I have twenty lights, nineteen master objects, sixty-one master shaders, a total texture map surface of 24,015 pixels by 24,015 pixels at 2.15 GBs.

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Posted: 19 February 2013 04:54 PM   [ Ignore ]   [ # 128 ]
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DazStudio 4.5 and the Garabaldi Hair/fur Plugin…

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Posted: 19 February 2013 09:17 PM   [ Ignore ]   [ # 129 ]
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I’m partial to Unbiased engines.
I don’t care about realism, but for me it’s definitely a lot easier to get better results.
Regarding realism, some of the stuff I have done in LuxRender has been mistaken with a photo without even trying to do something realistic.

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Posted: 20 February 2013 10:22 AM   [ Ignore ]   [ # 130 ]
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arch vis renders?

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Posted: 20 February 2013 12:59 PM   [ Ignore ]   [ # 131 ]
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I like rendering with what I feel like at that moment!  For me it’s not so much about realism, but a lot to do with the tools. Because I don’t sell cars or diamonds I don’t care if my art is “photoreal”.

I average out about 60/40 in favor of biased engines based on my renders over the last year. Last night I was deciding if I should render a piece I am working on with 3DL or Octane. Both have advantages, and I haven’t decided yet. (ultimately it may come down to the speed of the render, Octane speeds past 3DL for images that look similiar. If I cut corners than 3DL can speed past Octane. Will depend on how I feel when I am done with the composition. I dislike 8+ hour renders, especially when I am planning on multiple render passes. So lately I have been using more Octane for that reason.)

Now I am just going to spam some renders. I would put more 3DL renders in the mix but most of the good ones I have are nude, so here are some of my pieces that shouldn’t cause a commotion as the characters are clothed. But I do appreciate they are edgy to some.

Can you tell which one is 3DL?(no not Mara the blue demon girl, she and her stylized hair were rendered in Octane) And yeah I know I shouldn’t be doing stylized stuff in Octane *sigh* but I do anyway. As I said, not shooting for realism.

***************BIKINI CLAD FANTASY PINUP ART WARNING***************


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Posted: 20 February 2013 01:35 PM   [ Ignore ]   [ # 132 ]
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wow surprised lars, especially the lighting on that 2nd one is gorgeous.

i’ve been trying to figure out the CUDA and GPU thing.

I was wondering what hardware you’re using for your Octane renders?

Thanks.

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Posted: 20 February 2013 01:48 PM   [ Ignore ]   [ # 133 ]
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lets toss in some landscapes..

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Posted: 20 February 2013 02:08 PM   [ Ignore ]   [ # 134 ]
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Misty Whisky - 20 February 2013 01:35 PM

wow surprised lars, especially the lighting on that 2nd one is gorgeous.

I was wondering what hardware you’re using for your Octane renders?

Thanks much.

I was originally testing the Octane demo on an old 8800GTS with 768mb ram. Not enough ram for a scene, but enough to load up a character and experiment with settings.

Once I realized Octane could replace Lux I purchased a 660ti with 3gb of ram. Cpu is just an i5 with 8 gigs of ram, so not much special there. Will upgrade the RAM in a few months or maybe sooner, but works fine with up to 4 characters and a stonemason environment. The only reason I want to upgrade is for using LAMH OBJ hair in Octane. Otherwise I don’t actually notice my hardware holding me back, but I mostly render pinups.

And before Octane I did use Lux/Reality for a few months. But I can’t go back to Lux at this point. Not a quality issue, just a speed issue. Even on a network of machines, was too slow for me. Here are a few renders from my Lux Days.

Sorry for all the ladies, but that’s all I render smile I do actually render their legs sometimes too LOL.

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Posted: 20 February 2013 02:12 PM   [ Ignore ]   [ # 135 ]
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They all are beautiful, but I like your LuxRender images more.

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