Light and Visibility Question

[Yure]

What is the range of regular vision?

If one has a 20ft light source in a darkness area, what is the range of dim lighting after it?

Is it double the range so 40ft of dim lighting? Or just an extra 20ft?

Lastly which page or section can I find this?

[Nefreet]

Vision and Light

From the narrative standpoint of the GM, lighting is no different in Starfinder than it is in the real world. From the tactical standpoint of a flipmat, use the rules for the light sources you have.

Like portable lights.

For the radius of dim light, generally, "[a]n area just beyond the range of a light source has dim light". I'd probably say 5 feet, personally, but I know several GMs who use the same distance for dim light as normal light.

See also Line of Sight

[Yure]

So area just beyond bright light is dim light? Same thing for normal light (area just beyond normal light is dim light)?

Sounds wonky.

That the area "just beyond" isn't defined makes it sound fudgy.

[Nefreet]

Just ask your GM ^_^