@susiemc@bankmann The spark is the entry level lens. Fixed aperture lens mounted in a stiff bellows. You squeeze, stretch, pull... to get the desired focus on your focal point, everything else is blurred and distorted. (interesting and fun, challenging and frustrating - 6 word summary)
Sue, Lensbaby has a series of lenses (and optics and accessories) with changeable focus. Not quite tilt-shift, but close, and way cheaper and more creative. Check them out on http://www.lensbaby.com/ or http://en.wikipedia.org/wiki/Lensbaby
@susiemc