Go camping without a lighter once. One of two things will happen. Either you’ll figure out how to make a fire, or you’ll go to sleep cold. In the latter scenario maybe you’ll end up closer to your companions than you ever planned. In the former, you might see something like this, for an instant. Blink and you’ll miss it, but if you don’t miss it you’ll have trouble knowing what you saw. When you strike a flint with a piece of metal - even a jerry rigged one - you’ll produce a spark more luminous than the sun. Sparks fly.
Canon EOS REBEL T3i
ƒ/5.6 1/640 300mm ISO100