If you live in Los Angeles or San Francisco, things tend to get a little blurry after 10 yards all around you...
On an extremely clear, Winter day, from my bedroom window, I can vaguely spot the 3,000 foot Black Mountains, through 20 miles of compressed Mist, Fog, and Smoke....
But, I'll tell you what...
There's no way that I can spot the Sheep grazing on top...
...and I'm bleedin' sure they can't see me either!...

...
From my seat in our Club's Cessna 152 at 800 feet ASL, I can barely pick out objects 8-10 miles ahead through the haze...

...!
In real life, it takes a lot of concentration so spot a grass airstrip from the air, under most conditions....
...unless you live in Australia...where the creepy-crawly Spiders come from...
...and the residents have 20/20 vision....

...!
Paul...

...!