Somebody here (or perhaps on the Framers list) asked about techniques to get good bios screenshots. For those who might be interested, I just came across a good example of screens, and a mention of the video capture device used.
Image: http://www.hardocp.com/image.html?image=MTI5NDcxNTE1M1NNSTgwSDVodGFfM18yX2wuZ2lm
Tool:
Dan_D, forum editor, said:
"They are taken with an old school DVC-80 S-Video capture device using an S-Video output on an NVIDIA graphics card. The AMD / ATI's produce inferior results via S-Video so I never use those for screen shots."
http://hardforum.com/showthread.php?s=a8982caf7410523d9bd17933692b157f&t=1578842&page=2