Help Me Learn Octane

VIArts

 During the last couple Carrara Challenges, I was trying to use Octane, but kept losing time to learn it because of school. So. I started this to help me learn it.

 

What i tried to render was a nightd exterior scene using DCGs StarBriight and an interior scene lit by a single candle. So both were dark scenes. But Octane renders them bright as day, no matter how low my lights are set.

 

I tried a suggestion from Wendy to use an emission surface. i used a sphere. still bright even at 0.

 

Ideas?

rock livrette

As far as I know Starbright does not work with Octane (...at least I didn't find the settings to make it work). Here is a simple setup to build a night scene.

The blue light from the sky is just a lightplane (Octane diffuse shader, emission, texture rgb color), sphere for candleersatz just the same. The stars is just a background picture (from unsplash).

If you want to light the scene with the background picture (I prefer the lightplane - makes adjustments quite easy) play with the Octane environment power setting under the effects tab.

By the way: maybe your scene is soooo bright because the environment power setting is too high.

 

 

Vyusur

You can also use HDRI in the Background slot and bulb lights with enabled bulb in octane effects tab. I attached two examples: with default octane lighting and with HDRI and a couple of bulb lights.

VIArts

on't think i have any HDRIs. But Diomede was right. i yanked the environment power to 0 and got this ith an emitting sphere

 

VIArts

'kay, now I have lots of fugly fireflies where spedcular should be on glass. What's the pest control to fix it?

Rashad Carter

Render Target-Imager-Hot Pixel Removal- Lower that default value from 1.0 to something lower until the fireflies disappear

Rashad Carter

MAJourney said:

 During the last couple Carrara Challenges, I was trying to use Octane, but kept losing time to learn it because of school. So. I started this to help me learn it.

 

What i tried to render was a nightd exterior scene using DCGs StarBriight and an interior scene lit by a single candle. So both were dark scenes. But Octane renders them bright as day, no matter how low my lights are set.

 

I tried a suggestion from Wendy to use an emission surface. i used a sphere. still bright even at 0.

 

Ideas?

As always, the best way to learn Octane is not to do so through the lens of a plug-in. You really do need to learn how to use the standalone, even if you never plan to use it in the future, it pays dividends to know WHY certain things operate as they do. The standalone is not as painful as it seems and you will move miles faster than learnign through a plugin. All the best!

VIArts

I modeled this

Chris Fox Art

From what i still remember is that Octane works with it's own light sources/environment light, if you click on scene you can change the parameters on power settings.
Light sources only works with octane compability, so light bulb have an option for Octane Light but all other light sources doesn't work, so the best way using light is to use a HDRI

Vyusur

Chris Fox Art said:

From what i still remember is that Octane works with it's own light sources/environment light, if you click on scene you can change the parameters on power settings.
Light sources only works with octane compability, so light bulb have an option for Octane Light but all other light sources doesn't work, so the best way using light is to use a HDRI

Spotlight also has checkbox for Octane and works fine with Octane plugin.

 

VIArts

Wait, where? I don't see light checkboxes.

Chris Fox Art

MAJourney said:

Wait, where? I don't see light checkboxes.

If you click on the light source itself there should be the option on the top right menu (where also General, Motion,... is located)
So if you add a bulb for example you can just scroll down the general tab and there should be the Octane Light option

Vyusur

Attached are screenshots and render examples:

VIArts

Ah, thanks