CG-Lion Spotlight Presets Pack 1.0

by CG-Lion in Render Setups

The CG-Lion Spotlight Presets Pack 1.0 is a set of 20 configurable spotlight presets for Blender, that faithfully mimic real-world IES lamp lighting without a need for an add-on or any external files.

The presets are conveniently packed into one easy to use interface that allows fast selection of the light beam pattern design, setting the light intensity, choosing the light color by using Kelvin color temperature, RGB color or both,
And also tweak properties that are unavailable in regular IES lights like controlling the focus of the light beam, and adding a Chromatic Dispersion effect.

The CG-Lion Spotlight Presets Pack 1.0 can be used both as a ready to use Lamp or a Mesh light.

Using the Spotlight Presets Pack:

In your scene,
Choose File > Append,
Locate the ‘CGL_Cycles_Spotlight_Presets_Pack_1.0.blend’ file, and click it to browse its contents.

For using the Spotlight Presets Pack as a Blender Lamp, Choose:
Object > CGL_Spotlight
With the Lamp selected and active,
In the Properties > Data tab,
Choose the light beam style and set its parameters.

For using the Spotlight Presets Pack as a Circular Mesh Light, Choose:
Object > CGL_Spotlight_Mesh_Circle
With the Mesh light selected and active,
In the Properties > Material tab, under Surface,
Choose the light beam style and set its parameters.

For using the Spotlight Presets Pack as a Square Mesh Light, Choose:
Object > CGL_Spotlight_Mesh_Square
With the Mesh light selected and active,
In the Properties > Material tab, under Surface,
Choose the light beam style and set its parameters.


The CGL_Spotlight_Presets_Pack_1.0 parameters:

Beam Style:
Numerically select between 1 - 20 light beam designs.
* In render viewport mode you can simply scrub this value and see the light design change in real time.

Beam Focus:
A positive value will narrow the beam, and a negative value will expend it.
* default value is 0.0

Intensity:
The light intensity (strength)

Color Temperature (1 = 100 Kelvin):
Set light color by Kelvin color temperature.
* the value is divided by 100K for tweaking convenience (65 = 6500K)

Color Filter:
Set light color by RGB color selection.
* multiplied with the color temperature

Color Filter Weight:
The amount at which the Color Filter affects the overall color.

Chromatic Dispersion:
Add a chromatic dispersion effect to the light beam.

What are the advantages of CG-Lion Spotlight Presets Pack 1.0 over regular IES lights

1. Quicker to switch and choose between different light designs.

2. Ability to tweak the light beam focus (spread).

3. Ability to add a realistic chromatic dispersion effect.

4. Built in mesh shader that renders the bright light source.

Is the CGL_Spotlight lamp slower to render than a regular lamp?

The CGL_Spotlight lamp produces realistic light beams that are significantly more complex than a regular lamp, and for that reason it requires significantly more samples to be rendered smoothly.
For a scene that need a large number of light sources, it is best to use the CGL_Spotlight sparingly, only where its light beam is seen clearly like near walls or pillars, and use a regular lamp with roughly the same color and intensity in all other places.
* A Black Body converter node can be connected to a regular lamp in order to set its color using Kelvin temperature.

Does the CG-Lion Spotlight Presets Pack 1.0 render on GPU?

Yes.
CG-Lion Spotlight Presets Pack 1.0 is works with the Cycles render engine in both GPU and CPU rendering modes.

Is CG-Lion Spotlight Presets Pack 1.0 an add-on?

No.
CG-Lion Spotlight Presets Pack 1.0 is an advanced Emission Shader for Cycles render engine.
There is no need for installing an add-on,
All the light presets data is built into the shader so there is no need for external files.

How does the area of the light source affect the lighting?

In both Blender Lamp and Mesh Light mode, A Larger area will soften the light/shadow.

What's the difference between using the light presets as a Blender Lamp and as a Mesh Light?

As a Blender Lamp, the light will be sampled better than as a Mesh Light, but the bright light source will not be seen.

As a Mesh Light, the lighting will require more samples to render, but it will have a correctly bright light source that will appear in the scene where the light is placed,
And it will also be possible to use an Array Modifier to quickly place multiple spots.

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