David- that is good to hear, as I have read so many conflicting reports on the new H series lenses. I do recall people saying if you had access to previous series lenses, that the 50 was the better of their 40 and 50 if you wanted to stitch.
First, the 40 IF is a Zeiss V-series lens, NOT a Fuji H-series lens. Of course, you could use it on the H series cameras with the Hassy (expensive) adapter.
Second, it is NOT TRUE that the 50 is the better stitching lens. The 50 is better than the older CFE version of the 40, but Hasselblad really produced a winner with their latest IF version. The newer 40 IF lens is leaps better than the older 40, which is what people have compared the 50 against.
Also, you can see the difference better with a MFDB, since the AA filter on 35mm systems smudges too much fine detail. (The exception would be the Leica DMR, of course, since they do not use an AA filter.) However, on a MFDB, the 40 IF produces the sharpest stitched images yet.
Don't get me wrong, the 50 is also stellar and is also a killer shifting combo using it with the PC-Mutar and a MFDB, but it is NOT better than the 40 IF. The 40 IF is a real sleeper, and overlooked mostly because it is so much more expensive than the 50....but as with most things you get what you pay for.
