I am always amazed that our "Flight Simulator" Chums expect to be able to see clearly, hundreds of miles into the distance...

...!
During my real flights up into the Blue in our Club's Cessna 152's, I notice that I can rarely see more than a couple of miles, reasonably clearly, into the distance!
Beyond that, everything is blurred in Mist, Fog, low Cloud, Smoke, Dust, Sun-glare, and general atmospheric pollution!
For
realistic Sim Flying, I always set my
visibility between 5 to 10 Miles (or even less), and adjust my Weather Settings to suit!
Paul...G-BPLF...FS 2004... 8-)...!
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.