yep, used videomaster falcon some years back. it worked fine. you can grab 25fps 160*100 in quite alot of greyscales. you can also grab stills in fullscreen and even in color by rgb splitting. but that's quite silly.
anyway, it worked fine on a standard falcon.
i doubt if vidi st would run on your falcon, could be though.
i've heard about the expose and screeneye. they should be much better (but take the expansion port of the falcon!).
