Unrelated, but do you think you could make a case for a set of Canon lenses that were Shift-only? I just wonder, with the tiny tolerances we have now for focus, and everybody viewing at 100%, if the fact that the lens tilt and shift might sacrifice quality. On a job, I rarely tilt, but I shift a LOT, and I stitch. Even when I've got that 24 or 45 set to "zero tilt", there still seems to be a tad amount of leeway, as in "Am in really at zero?", even when locked down in the detente setting. If Canon offered a Shift only set of lenses I'd buy those in addition to the regular T/S.