Take screenshots of the full screen, of the active window or of a custom region, apply it effects such as adding a drop down shadow or making it black & white, copy it to the clipboard and save it on disk, only in one step.
The Vision Egg produces 2D and 3D visual stimuli on commodity (or workstation) video cards using hardware-accelerated OpenGL. It is built for precise timing, precise color and luminance specification, and real-time control of graphics.