Looks about right to me...
I set my "clear" visibility to around 5-10 miles maximum, which generally represents what its like in real life when you are up in the air.
You can rarely see detail ahead in an aeroplane, due to fog, mist, smoke, dust, rain, low cloud, etc, etc, in the atmosphere!
Outside of that 5 mile radius, the ground detail is greatly reduced!
Paul..G-BPLF...FS 2004...FS Navigator...and a local weather forecast...

...!
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.