Today, 12:53
I use a free utility called Greenshot for snapping screenshots. It allows me to predefine the save location, file name structure, and type (straight to JPG so no reformatting from BMP like a lot of other options). It also allows you to assign a hotkey of your choice to various types of shots. I have it mapped as Shift + Print Screen.
For my T.16000 joystick, I use Thrustmaster's TARGET software which allows you to create profiles which map each joystick button to a key press. Instead of assigned FS controls to buttons, I assign the buttons to the default key. I simply set one of my buttons to the Shift + Print Screen and every time it gets pressed I get a screenshot saved away. It's important for me to be able to snap them on the fly because we're usually doing maneuvers or something...