Default HDRI!

Little secret about Daz Studio: It has default HDRI map & light!

But you may not found it, because by default it's Draw Dome is off, but you can "On" it manually.

Go to Render settings>Editor>Environment>Draw Dome: Turn it On. & move courser to Environment Map to see default HDRI Map.

It will look likes bellow image, background in render; when you turn on Draw Dome.

Try it!

Thanks.