Thanks for that - I've been looking at building the 'Mk2' version of the adapter, since to be honest I wasn't too sure that the original would work as well as it did :-)
One problem with shorter lenses is that the 1Ds is effectively mounted at the end of a tube and in my version sets the sensor back some ~67mm. I'm looking at a different mounting plate design which minimises vignetting problems and still meets a $25 cost ceiling ;-)
The setting back of the sensor isn't really a problem for me, given the design of the MPP rear standard. It's still an experiment after all :-)
If I wanted the functionality of a digital back on a 'proper' view camera I'd buy the kit, but I can't justify the company's money on that sort of kit given the sort of commercial work I do ...it would be nice to use, but I just don't _need_ it :-(
Keith
PS Thanks for all the mails with suggestions and comments for enhancements :-)