I'll tell you what I do to take a nice crisp shot, Anthin....
As a VERY LOW and mostly slow Pilot, I take most of my screen shots either on the ground, or very close to the ground, to pick up the finest detail.
I never do like high altitude screen shots. The detail is lost in the mist!
Its excitedly watching all the grass detail evolving before my eyes as I skim over the tree-tops during flight that inhibits me from interrupting my time taking screen shots!...

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I must admit, that my existing ground detail looks very good during my flights in comparison with actual Photographs!
FSX...plus my extra bits and bobs....as real as it gets!.....

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Paul....Fish and Chip Supper coming up in a minute....so no time for pretending to fly at the moment!...

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UTX USA gives me some fantastic, very accurate Highway/Interstate road systems which I am very familiar with, full of traffic, which I follow very closely on my Road maps!
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.