CodePen Embed - Filters: brightness()

<img src="https://images.unsplash.com/photo-1486688680290-be46662593bd?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80" />
<img class="brightness" src="https://images.unsplash.com/photo-1486688680290-be46662593bd?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80" />
<img class="brightness1"  src="https://images.unsplash.com/photo-1486688680290-be46662593bd?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80" />

img { width: 32vw; }
.brightness {
  filter: brightness(0.5);
}
.brightness1 {
  filter: brightness(150%);
}

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