why can’t our phone camera perceive moon like we does?



Edit: we can actually see the moon while oir phone can only see it as a ball of light with nothing but light it the middle.

In: Technology

What do you mean by how we do?

The moon is actually very small in the sky. It would take 720 moons side by side to make a circle going all the way around the earth. You don’t really notice this when you look at the moon because you focus on the moon itself. Your phones camera, inf you don’t zoom it in, will include a big section of sky around the moon, and it will look small.

Plus the moon in a dark sky. Again, if you don’t zoom in, your phone’s camera will adjust the image to make it brighter, and so the moon will look like a patch of light against a dark background.

It would help to know what you mean by “like we do,” but in general, a camera has a fixed lens that exactly records whatever light shines through it. Our eyes do that as well, but then our brain get involved and compares the Moon to its surroundings (Is it low in the sky, close to objects on the ground or perhaps obscured by trees? Is it shining through clouds? Is it high overhead and all by itself?) and the color of the sky (Dark black? Dark blue? White? Red, pink, or orange?)

Our phones have something called autoexposure, meaning it automatically dials in the settings to expose the image correctly. What your phone does is that is looks at the image and averages all pixels and then it exposes for that average meaning that the moon if brighter than the sky will look like a white blob. Our eyes however expose for the brightest part of our “image field” giving us the details of the moon.

There is also a problem with resolution and noice. The phones camera sensor is quite small and pixel dense, this can lead to images being noisy. If the thing you are trying to photograph is small, you will probably zoom in but if your phone doesn’t have several lenses or some kind of zoom lens (highly unlikely) this won’t make a difference, it will simply crop the image beforehand making the noice more noticeable.

TLDR: There are many factors, leading ones are wrong exposure, “bad” optics and sensor size.

Edit: Made some corrections and formatted a bit.