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Light Demo

Poser Work In Progress posted on Feb 06, 2011
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Description


This goes out to MKeyes who asked about the lighting I used. This method may not give the best results, but it's intended to be FAST because my computer is old and my patience is limited. I use Poser but much of it can apply to DAZ Studio (Advanced only) as well. This is what I typically do for an outdoor scene: 1. Leave the default lights as you compose the scene. I'm using my "little friend" for this one. 2. Get rid of the default lights. Create one light for the sun and make it a nice golden color. For outdoor scenes, use raytraced shadows with a blur of 1. A tip at this point: if you set things up so the shadow of the head will not be seen, it's safe to turn off shadow casting for the hair. It actually looks better in my opinion, and will cut render times by 90% or so! 3. Create an Image Based Light. This is where Poser and DS diverge, but if someone knows how it's done in DS, please let me know. The Image Based Light replaces dozens of other lights in some sets that come with scenes you may buy. It "covers" better, is easier to adjust, and is WAY faster. Set the color to white, and rotation to 0,0,0. The truth is that an IBL probe DOES NOT HAVE TO BE COMPLICATED. As you can see, here it is a simple gradient, and that's usually enough! This shows how to make a gradient in Poser. In DS, I don't know how, but you can always make a 256X256 image of a gradient in a paint program and plug it in. The top color is for the sky. Make it a bright, PALE blue for daytime scenes. The bottom color should be very dark and roughly correspond to the color of the ground - concrete, grass, etc. - and also be fairly pale. Think of it this way: The sky is a light source in its own right, but the ground only reflects the light dimly. Also in Poser, set the "IBL Contrast" to 1. higher values don't really help, they just make it harder to control. If you want more contrast, change the gradient instead. This is all you really need. 4. Adjust the intensity of the IBL until the SHADOWS look the way you want them to. Ignore the highlights for now. 35% or so is a good starting point. Note that you need to render to see it. The preview shows the IBL as if it were an infinite light. 5. Adjust the sun's intensity until nothing is "blown out." This is also a good time to tweak the sun's color if necessary. Then, do a final render and bring it into a paint program. This 512X512 render at the "Final" quality setting took a minute and a half on my 6 year old computer! Retouching... Fix the armpits, smooth out the lumps, etc. Getting those annoying white lines around seams? Try a blur tool set to Darken mode. It works wonders on this. Finally, you may want to adjust the midtone contrast a bit. And there you go! You can save the light setup for future use. It will at least be close to what you want the next time you need it. I tend to use this on many outdoor scenes. I also use a slightly modified version for cheap indoor scenes (comics) where physical reality is not the top priority. Sorry I don't know the details of setting up an IBL in DAZ Studio but if you can, you can try it. In fact, if you do try it, I would really like to see the results! Thanks for reading this. I hope it helped!

Comments (8)


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kits

10:47AM | Sun, 06 February 2011

Excellent tut my friend

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Schaefchen

11:19AM | Sun, 06 February 2011

excellent beautiful work

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DangerousThing

11:28AM | Sun, 06 February 2011

Thank you for the tutorial. It makes a lot of sense! One possible suggestion for the hair, perhaps a substitute hair could be made that doesn't have much geometry or layers, but makes shadows similar to the real hair. Of course, then you have to make a shadow pass and a real pass without shadows. I've never tried the hair thing, but I've done it with trees where the shadows don't need to be perfect.

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MKeyes

11:57AM | Sun, 06 February 2011

Thank you so much for this! I had to read it over twice, right down a few points and now, I'm going to see how closely I can match it in D/S - what a champion you are for evening responding with this tut! Now, I'm off to play, as it's been a while since I've done an imagine and it's keeping me from being able to write, because images keep flashing in my head! Caio for now!

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Faemike55

12:09PM | Sun, 06 February 2011

Very good instructions

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T.Rex

1:49PM | Sun, 06 February 2011

THANKS a LOT! I've always had problems with Poser lighting. I've saved the whole page so I can refer back to it as needed. I can't wait to try this out (though I'm running Poser 5, it might work). Keep up the good work! Any more tutorials? I'd be glad to have them! Good job! :-)

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kennydodge

11:42AM | Mon, 07 February 2011

You couldn't have used a better test subject :)

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A_Sunbeam

4:30PM | Fri, 11 February 2011

Thank you for the information - very helpful!


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