A silly question

Do you ever use pop up flash when you are taking photos outside. I assume that when there is a lot of sun there is no need for the flash. It's best to let natural light in right? Ok I am just a begginer in photography so bare with me please

I don't have a flash of any sort built into my camera, but I do have an external flash that I use outdoors when I need it. Pop up flash is quite harsh, but better than nothing if you don't have a reflector or white surface that is reflecting some light back onto the subject. I don't think your question is in regards to the use of pop up flash vs. external, or about "overpowering the sun". Both very different questions with huge answers. My guess (not knowing your existing skill level) is your question is "Why would I use flash outdoors when there is plenty of sun?" There are many answers to that and it all depends on the QUALITY of light that is coming from the sun. For example, if your subject is outside and there is strong sunlight on their face, so much that they are squinting, or making harsh shadows, you would probably think, "Better turn them around so the sun is off their face." If you do that, your EYES probably think, "That's better!' and you take the shot. Your eyes are much better at adjusting for light than the camera is, but you are going to be fooled because once you do that, your camera is now trying to decide what exposure it wants to use and it THINKS, " Dang, that background area and that sun shining is bright! Better make the aperature tiny (or the shutter fast) so that not too much light gets in here." The result? Your subject's face ends up darker than you want, and everything else is good. (kinda, sorta, there is lens flare and whatnot that could happen, but I'm trying to give you a general idea.) So what's a photographer who might not really understand what is going on, to do? One of the things you can do, is to add flash that will brighten up the face on your subject, which is really what you want to see clearly. If you have your camera on "auto" there is no way in hell that the camera is going to give you flash because as I mentioned, in Auto mode, it already thinks everything is wonderful and there is plenty of light, but it has been fooled! You need to know your gear and know how to make the flash fire, even when the camera is saying "Nope, don't need it."

That is an oversimplified answer to what might not even be your question, but there 'tis. Lots of people would say (correctly) that you should find some shade etc. and use fill flash, and that is absolutely the right answer, but not always possible or desirable. For example, if you want to take pics of your kids at the beach where there is no shade. Or whatever. I'm just trying to explain a situation where there is plenty of sun and you would need flash anyway, to make things look right. Don't know if that helped, or hindered...

Yeah, the pop up flash can be handy for adding a touch of fill light to backlit subjects, set the flash compensation to turn it down a little, so the subject doesn't look flashed (maybe -1 or more, depending on the lighting I may go down to -3 stops or more, using a speedlight).

That just helps put some light into the face and stops it being underexposed, it also has the bonus of putting catchlights back into the eyes, which always brings the eyes to life.

Normally, the pop up flash is too harsh, and in the wrong place, for good lighting. However just providing a touch of fill light, it can do a reasonable job. A speedlight will always be better of course, if you have one handy.

I have stopped using my pop up flash. I have noticed that natural light gives a nice glow to the eyes, but the flash ruins the beautiful glow and the eyes just look normal