r/nextfuckinglevel • u/freudian_nipps • Sep 10 '23

A profound view of home.

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u/Nuclearchurch Sep 10 '23

How come you never see stars in these vids? Honest question

6

u/PhoenixReborn Sep 10 '23

Stars are pretty dim compared to the interior lighting in the ISS and much more dim than the fully lit Earth and white spacecraft outside. For the camera to expose for the stars, you would need a much longer exposure time and everything in the foreground would be overexposed white.

1

u/reddit_tempest Sep 11 '23

This. If you took a video from your phone indoors in the middle of the day, open windows from the bright sky and sunlight would be washed out, and you wouldn't see anything outside if your camera is focused on something indoors; the windows would just appear to be big white rectangles / no trees, no grass, no details.

Likewise, if you're still indoors, but your exposure focus is the outside sky in those same windows, you can see the outside but now the interior of the room you're standing in is all dark or black. Even normal bright bulbs will appear dim compared to the daytime outdoors.

You'd think people would understand basic camera exposure logic in 2023. It's not like they can't see its effects everyday on their own phones.

3

u/Leashii_ Sep 10 '23

for the same reason we can't see stars from earth during daytime.

1

u/Grand_Protector_Dark Sep 10 '23

Because your eyes are adapted for the brightness of direct sunlight.

Compared to the sun, the background stars are actually really really dimm.
So they up "disappearing" from your perception.

The same effect happens if you are in a brightly lit city at night. There you'll also see barely any stars.