I have since learned the 67 lends itself to this sort of technique. At some point the discussion about MedFormat in general became specific to the use of the 67, as it's the only MedFormat choice out there (coincidentally, it wasn't on the list of choices the original poster asked about). I don't know how many other med format cameras have MLU, but my suspicion is that they're not as easy to use as the 67. My recollection of either a 'blad or a Bronica was that using MLU was quite a bot more difficult.
Anyway, I've learned something. Thanks. Shel "You meet the nicest people with a Pentax" > From: Aaron Reynolds <[EMAIL PROTECTED]> > Date: Nov 21, 2005 11:20 PM > Oh, now you've sucked me in. I looked at the site and I have to > respond to Shel -- > > > OK, I can see that as a ~possibility~ in situations where critical > > focusing > > isn't required and the subject is far enough away that you can take > > advantage of the hyperfocal distance or DOF, and the lens is stopped > > down > > substantially, depending on just how critical you'd want or need the > > shot > > to be. I agree that all bets are off with lenses past a certain focal > > length (depending on camera body/format). I'll give this one to you > > based > > on the number of qualifiers in the discussion, although I still can't > > see > > any reason for doing such a thing other than to say you did it. > > > > For example, your own tests a few years ago showed that MLU played a > > role > > in generating sharper pics, with a tpod mounted camera, only between > > certain shutter speeds, which were quite low - like 1/2 sec to 1/30 > > sec or > > something similar. If you're shooting at a faster shutter speed it > > would > > seem that the need for MLU is minimized or of no importance. Trying to > > hand hold many cameras (in this case we were talking about MF) at > > slower > > speeds introduces movement and degrades sharpness. So, what's to be > > gained > > by using MLU while hand holding a camera? > > Shel, my own use of it is always at 1/30 and close to wide open, when > it makes a difference. My framing and focus do not change any more > than they change when I depress the shutter button -- I am not taking > my eye away from the camera or moving the camera, I am pressing one > button followed by another in one smooth motion. > > You can see in that sample I linked to before that the plane of focus > is razor thin -- while the subject's face and hands are sharp, nothing > else is. > > I have been very successful with this technique and generally have no > images that I reject due to "shake" that didn't involve me sneezing or > losing my footing or something like that.

