Case study; Rembrandt Lighthing

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Case study; Rembrandt Lighthing

Postby Mortze » Sun, 18Aug05 01:10

I posted in Sexy Girls a picture of a case study I did today, here is the link viewtopic.php?f=2&t=8&start=4890

I tried to make the dramatic rembrandt lighting technique that simply states 2 things; a triangle lighting effect on the cheek of the darkest side of the face, and a contrasting balance between shadows and highlights.
You can google Rembrandt paintings and you'll see that he loves contrast between shadows and light. His paintings scream dramatism.
Here's the setup I used:

Image

Image

Using the aerial view (firs tpicture) as reference:

- Main light on the left and down.
- Fill light on the right and down.
- Rim light behind
- Background light behind Laura, lighting the pane background
- Reflector pane primitive left of Laura

The fill light is very soft, almost inexistent, and the reflector adds a nice soft silver rim on Laura's left side lips.
The Rim light lights the superior part of her hair and her left shoulder and chest. It's subtle just to light up those parts.
Because of the subtle Rim light I use a background light to make Laura stand out from the background.

All the lights are spotlights with circle (Rim, background) and rectangle (main and fill) geometries. Default light temperature for all.

Spotlights geometries are awesome to mimic real photography lighting material like umbrelas and softboxes. Render times are way faster than using emissive surfaces as lights.

I hope this was usefull!
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Mortze
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Re: Case study; Rembrandt Lighthing

Postby MaxCarna » Mon, 18Aug06 02:52

That's great, Mortze!

The current setup I'm using is based on geometry disc spotlights.

As I usually put the Rim light behind the character, I was getting strange effects in the hair, like if the black spot appeared looking through the hair. The problem is discussed here: https://www.daz3d.com/forums/discussion ... -in-render

So I keep Key and Fill lights with geometries, but the Rim light I changed back a point spotligh with a spread angle of 75.

Is fast and nice setup to make a lot of images, but very far from this work of art.

Congratulations
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Re: Case study; Rembrandt Lighthing

Postby Mortze » Mon, 18Aug06 13:03

MaxCarna wrote:As I usually put the Rim light behind the character, I was getting strange effects in the hair, like if the black spot appeared looking through the hair. The problem is discussed here: https://www.daz3d.com/forums/discussion ... -in-render

You can turn around that by replacing the spotlight with an emissive disc (opacity very very low; 0.001% or less) but that will make the render slower. I never use that.
Try to put your rim light out of the camera shot. Of all the lights the Rim is the one that can be used as a point but it's always better to avoid point geometries. That's something that rarely exists in the natural world. In photography they rarely use it anyway. It's always a plane or a sphere; softboxes or lightbulbs.
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