An interesting part of this application is that, you don’t need to open the program to select screen, window or area for capturing; each option has its own hotkeys, which you can set as per your choice. Main Features of Lightscreen:
Five configurable actions, each with it’s own hotkey (screen, window, area, etc). Multiple image formats (PNG, JPEG, etc) and image quality selector. A notification when the screenshot is taken. Screenshot delay.
Lightscreen works with Windows 7, Vista and XP. You can download it free at Sourceforge