A Minolta MD 50mm f/1.4 lens (a classic "standard lens").

The focus ring is set to infinity and an aperture of f/8 has been selected. ​The zone that will appear acceptably sharp with these settings can be easily read directly from the lens barrel. Just look at the indicator markings below the feet and meter scales,

as pointed out by the two yellow arrows!

That's it!

At f/8, the depth of field stretches from approximately 10 meters all the way to infinity (and visually even beyond on the scale)—indicated by the two white arrows! ​ If you stop down to f/16, the depth of field expands even further, covering everything from 5 meters to infinity. You can now easily check and verify this on the scale yourself!