L I G H T I N G - T R I C K S






Before we start there are two things you need to know. There are 2 types of lights. Infinite and Spot.

Infinite lights have no source, they just point all light from the angle selected.

Spot lights have a source that can be moved. They also have an angle and distance options. Therefore, you can park a spot camera 1.5 in front of a character, point it at the person's face, and only light the face.

Also. This is not the only way to do this. But this is my tutorial, so this is how *I* would do it. With that said. Let's begin.

 

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Basic Lighting

So we are going to be using this female model for this part of the tutorial. She is the seen here with the default poser lighting.

 

This is the lighting I had here. All three are "INFINITE" lights. Only light 2 had a shadow.

 

Here is a shot with a Infinite white light pointing straight at the model. I turned off the shadows.

 

This is the same light I made as a spotlight. No shadow and these settings

Light 1 0 Angle Start Spline 0.0000
Light 1 0 Angle End Spline 70.0000
Light 1 0 depthMapSize Spline 256.0000
Light 1 0 xrot Spline 0.0000
Light 1 0 yrot Spline 0.0000
Light 1 0 zrot Spline -0.1485
Light 1 0 scale Spline 1.0000
Light 1 0 RED Spline 0.9805
Light 1 0 GREEN Spline 0.9805
Light 1 0 BLUE Spline 0.9805
Light 1 0 INTENSITY Spline 1.0000
Light 1 0 xtran Spline 0.0000
Light 1 0 ytran Spline 0.6050
Light 1 0 ztran Spline 1.0000

On this image. I turned the shadow back on and moved the light to her right, using the Xtran dial. The shadow gives the room some depth. What I usually do is, have one or two of the main lights have the shadow, and then the filler lights, I turn off shadows. Turning off shadows will also speed rendering. Here are my dials on this one.

Light 1 0 Angle Start Spline 0.0000
Light 1 0 Angle End Spline 70.0000
Light 1 0 Point At Spline 1.0000
Light 1 0 shadowStrength Spline 1.0000
Light 1 0 depthMapSize Spline 256.0000
Light 1 0 xrot Spline -42.0000
Light 1 0 yrot Spline -96.4812
Light 1 0 zrot Spline 0.0000
Light 1 0 scale Spline 1.0000
Light 1 0 KdRed Spline 0.9844
Light 1 0 KdGreen Spline 0.9844
Light 1 0 KdBlue Spline 0.9844
Light 1 0 KdIntensity Spline 1.0000
Light 1 0 xtran Spline -0.6637
Light 1 0 ytran Spline 0.9015
Light 1 0 ztran Spline 1.0306

TOPIC 1 - OVEREXPOSURE!

 

 

This is a perfect example of what NOT to do. I see this everywhere too. I wanted to better backlight the scene, so I added a white ambient light and pointed it forward. I now have 2 full lights pointing on the character.. that is 200% Light! OVEREXPOSURE!! That is bad.

This is a close-up of the overexposed face. See the loss of detail? See the shine on the face?

What I do here is drop the ambient light to 30% and the spot to 70%. Now we have a total of 100% light and we re-render.

In contrast to the last one, this appears darker, but if you hide the first picture, look away for a few minutes (go pee, and get another Mountain Dew) and then look at this picture first, you will see what I mean.

This way, you retained the detail of the skin, kept the proper depth shadows, and the skin doesn't look so shiny.

As you can see by this close-up the detail is retained.

You can add as many lights as you like, but it's important that the main subject doesn't get over lit. If you wanted to throw a spot on a second figure, and the light beam doesn't cross the first figure, then by all means, make that light as bright as you need to. In other words.. you can have 10 lights in a scene that have 100% just as long as no surface is lit by 2 lights or the sum of the light be greater then 120% or so..

TOPIC 2 - AMBIANCE!

Let's take a scene. Now when I first started Poser, I wanted to light things up. In Nov 2003, This would have been the way I made this scene.

 

2 Ambient lights(gray) and a spot pointing to the character from x=.5 - y=1.5 and z=1.0

 

Let's put her into a fight with a Ninja. Looks pretty good, and I would have done it this way my first year using poser... but I'd like to show you something else.

Now.. my usually disclaimer is.. I can't dictate taste. Opinions will vary, and your taste might lean towards something different. I cannot control your taste, but since this is my tutorial. this is how I like it, and how I do it. Others do it differently, most are better then me, but again.. my tutorial.

Now, on this image, I wanted to make it a bit more sinister, so I changed the color of the lights to a brownish color and dropped one of the ambient lights. With 2 spots, I created this more "night time" scene.

Light 1 was:

Light 1 0 Angle Start Spline 0.0000
Light 1 0 Angle End Spline 70.0000
Light 1 0 Point At Spline 1.0000
Light 1 0 shadowStrength Spline 1.0000
Light 1 0 depthMapSize Spline 2000.0000
Light 1 0 xrot Spline -56.0000
Light 1 0 yrot Spline 0.0000
Light 1 0 zrot Spline 0.0000
Light 1 0 scale Spline 1.0000
Light 1 0 KdRed Spline 1.0000
Light 1 0 KdGreen Spline 0.8427
Light 1 0 KdBlue Spline 0.6371
Light 1 0 KdIntensity Spline 0.9119
Light 1 0 xtran Spline -0.5000
Light 1 0 ytran Spline 1.0000
Light 1 0 ztran Spline 1.0000

Light 2 (no shadow) was:

Light 2 0 Angle Start Spline 0.0000
Light 2 0 Angle End Spline 70.0000
Light 2 0 shadowStrength Spline 0.0000
Light 2 0 depthMapSize Spline 256.0000
Light 2 0 xrot Spline 0.0000
Light 2 0 yrot Spline 0.0000
Light 2 0 zrot Spline 0.0000
Light 2 0 scale Spline 1.0000
Light 2 0 KdRed Spline 0.9686
Light 2 0 KdGreen Spline 0.8235
Light 2 0 KdBlue Spline 0.6667
Light 2 0 KdIntensity Spline 0.7000
Light 2 0 xtran Spline 0.1500
Light 2 0 ytran Spline 0.5370
Light 2 0 ztran Spline 2.0000


It still looked a little daytime-ish, most likely because of the shadow at about a 5:00 PM angle. So...On this one, I increased the y on both lights to have them hang basically overhead. Light 1 was set to point at figure 1 face and light 2 was set to point at figure 2 face.

I did this to basically simulate street lights. However, we lose something here. This one looks like someone standing above is holding a flashlight down on them. The light REALLY looks empty and unnatural, and therefore it draws attention to it's existence.

We need to make light seem natural, so the viewer doesn't notice the lights themselves. I was once told by a woman, the best make-up job was one where you couldn't see the make-up. This applies here too.

I created a light 3, colored it a reddish brown and from the x,y,z of -.5,1.5,-1 - I pointed it at the dumpster. This lights up the walls and adds depth to the scene. Since the "beam" of the light does not cross either figure, it's intensity is irrelevant, but I didn't make it too bright as to throw off the feel of the scene which was a dark alley at night. I set it at 30%

Now the light looks more natural, and therefore doesn't look like an "object" in the scene. The scene now also has some depth since you can now see the distance to the horizon.

On this one, I changed the colors a little more to make the lights look like they came from different sources. The light pointing at the dumpster I made it a rusty color as if it came from a old alley light.

I then darkened the shade on lights 1 and 2 by adding a little amber to them to match some street lights I've seen.

Since taste is something everyone differs on.. you might like the latter one, but I like this one better. I would probably call this one finished.

TOPIC 3 - Using Light for Emotion!
Returning to our face shot. I made our character look a little upset. This light is the front infinite light set at 100 and pointing forward, no shadow.

Now.. This is the spot, set at 100% and it's X,Y,Z, is .5,1,1 and the shadow is on. This makes her look more serious, and secretive.

 

For this one, I raised the Y axis so the light was overhead, an added some red into it. I was after the darker shadows in this. Made her look more dark and emotional.
It really doesn't work if she is happy though. Now it looks like she's crazy, or having a breakdown of some sort.

This is much better for happy. It's a bright image. It's a happy white with a touch of powder blue. All is well!

I have one powder blue spotlight from the right side (her left) and a white infinite light set at 30%

The total sum of the lights was 120% Probably the brightest I'd ever go.

 

 

For a flirt, I would go back to a darker, romantic red feel and shadows for that mysterious "I have a secret" look that women have when they are crushing on someone.

 

 

Something light and airy for the sad face. But I think you get the picture.

That's pretty much it for now. I think that really covers all the basics for poser lighting. With this info, you can develop your own style, and stop relying on the crappy lighting presets that people come up with.

 

I hope you enjoy this tutorial.

Peace, and happy rendering.

Jpeger.

 

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