Houdini lights are too dark in omniverse

Hello, I’m learning how to use the Houdini connector for Omniverse.
I’m able to write to a USD file from Houdini and read it into Omniverse.
However, the lights I define in Houdini are too dark in Omnivse.
I have to crank the exposure on the lights to around 7 in Omniverse in order to see something.
Any idea why this is happening and is there a fix?