Using the self-timer, either with or without mirror pre-release should alleviate much of the vibration at and below 1/30th. I have certainly employed that technique with my Canon EOS 1N for a long, long time tripod-mounted (that is to say, mirror lock-up and 2-sec. self timer). Introduced movement is more likely hand-held at 1/30th. You can always improvise for stability e.g. shoot at ground level or on a rock, supporting the lens with a sock rolled up to support it (a shirt, a bushwalking boot — even knickers ... anything you can find or imagine). One way to sort fact from fiction with the F100 is to take it for a spin and find out exactly what it does do. I'm sure it will be damned good and an interesting experience.