Power Screen Capture is a software that can capture images from the Computer screen and the results are very good and good quality.
Power Screen Capture also offers the function of capturing video and image from other devices such as DV and TV Tuner. a list showing all the files captured by the power of the screen, and then you can view, copy, delete and rename files.
you can download this software directly from their official site or you can download via the link besides Power Screen Capture.