Twilight Render User Forum

I have long tried to do it with Kerkythea. Failed lighting accuracy. But I get such a colorful light refraction succeeded only with Twilight. Extract caustic with the first attempt failed. Adjusting the light was able to do it nicely. But anyway this is a difficult task

Nice!

I was playing with dispersion effects too recently but didn't get anything nice like this.
Are the materials from the library or templates?
Edit: Also, was it an easy 9, 10 or one of the tech progressives?

Use Easy10 with Spotlights. Easy09 with light emitting materials.
There is a perfect diamond material in the Twilight Gems Material Library.
Lighting is always "fun" when doing this type of rendering. (it will be a lot of trial and error)

ps.
looking at real photos of real diamond rings helps to give a more realistic understanding of what you should look for / expect in rendering diamonds.

pss
it requires a perfectly accurate model.
see also a link I placed in tips and tricks section - jewelry photo tips

Diamonds advertising made without dispersion. It is very important for photographers, the rays did not leave the diamond. They need to keep a light inside the diamond.

A short guide on how to obtain dispersion

alvydas wrote:Diamonds advertising made without dispersion. It is very important for photographers, the rays did not leave the diamond. They need to keep a light inside the diamond.

A short guide on how to obtain dispersion

I'm so far from tackling diamond refraction, but maybe this will help me with simple lights. your pics show the beam of light, illustrating exactly how it will strike the diamond, so you can gauge the refraction/reflection. I can never tell what's going to be in the beam of light until I render the image. Am I missing a step, or are you revealing what is unseen simply to illustrate- and if so, how do you gauge your lighting so accurately that you can strike the corner of a diamond ring without creating a spotlight circle on the table next to it?
thx for any insight, I know this thread is old

You can change any spotlight paramaters in the Light Editor dialog.
Insert a spot light, and change the hotspot to 1 and the falloff to 1 or 2, and you will have a very tight beam.

In TWL v2 you will be able to see a preview of the spotlight, just like you see previews of materials when working with them.
Subject: Diagram of a Spotlight

Fletch wrote:This diagram is to help a beginner understand what all those numbers mean for their Twilight Spotlight.


Things to remember when laying out lights in Twilight Render Plugin for SketchUp:

• For a space between 8-9 feet tall (about 2-2.5 meters) assuming that a spotlight of power of "1" is a 100 watt light bulb is a good place to start.
• Spacing your light fixtures out to match how you would do so in real life is essential.
• Loading an IES data file for a Can Downlight into your spotlight inside of a can downlight in your model is the fastest way to get great-looking lighting.
• Remember that the default color of the light source (even IES files) is always white, so setting the correct color for your light source is essential for realistic results.

Color of Lights / Light Render Speed Comparison
See also: Lights - render times...
& Lighting Made Simple

scene for testing

Relly informative guys.
Really like those renders.

Updated file for SU2020/latest Twilight.

Download and load the HDR from here! (Studio-2StraightEmitters-BlackSky.hdr)