http://www.rawworkflow.com/lensalign

Looks pretty good, though it a little $$$

<object width="400" height="225"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=2498404&amp;server=vimeo.com &amp;show_title=1&amp;show_byline=1&amp;show_portr ait=0&amp;color=&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=2498404&amp;server=vimeo.com &amp;show_title=1&amp;show_byline=1&amp;show_portr ait=0&amp;color=&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="400" height="225"></embed></object><br /><a href="http://vimeo.com/2498404">LensAlign™ Pro Sighting [Quick Guide Draft]</a> from <a href="http://vimeo.com/user640347">Michael Tapes</a> on <a href="http://vimeo.com">Vimeo</a>.

<object width="400" height="225"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=2504650&amp;server=vimeo.com &amp;show_title=1&amp;show_byline=1&amp;show_portr ait=0&amp;color=&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=2504650&amp;server=vimeo.com &amp;show_title=1&amp;show_byline=1&amp;show_portr ait=0&amp;color=&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="400" height="225"></embed></object><br /><a href="http://vimeo.com/2504650">LensAlign™ Pro Micro-Adjustment [Quick Guide Draft]</a> from <a href="http://vimeo.com/user640347">Michael Tapes</a> on <a href="http://vimeo.com">Vimeo</a>.

 

It looks like a well designed tool. It also looks like one of those things that will drive you crazy because you'll soon discover that all your lenses are crap, even though they were working fine before you bought it.

I've also heard that microadjust is of limited value because it doesn't help a lens over its entire range of focus. A lens might front focus a bit at 10 feet, then it might back focus a touch at 30 feet. Adjusting the entire range by some value either forwards or backwards wouldn't help the lens at all points of focus. However, I can see this being useful for portrait lenses where you're going to be roughly the same distance from your subject most of the time.

 

I could see your concerns for zooms, primes benefit more. This is just like that pdf going around to check the proper focus, but better executed. At least with this you can check your lens before you send to Canon/Nikon, etc. and them you think you have a front or back and where you see it at. The cost to ship and one good zoom there and back is about have the price of this.