While there's not a lot to be gained with handheld MLU, it eliminates mirror slap vibration which can be a factor. As I mentioned in a previous post, Aaron did it quite frequently with the 6x7. I recall one people pic he showed here that was shot at 1/30 with a 75mm lens. I think it was nearly wide open. I know I've used it with the 105mm lens at f5.6.
Paul
Paul
On Nov 21, 2005, at 7:11 PM, Shel Belinkoff wrote:

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
"You meet the nicest people with a Pentax"


[Original Message]
From: William Robb <[EMAIL PROTECTED]>
To: <[email protected]>
Date: 11/21/2005 3:29:35 PM
Subject: Re: Possibility of Medium Format enablement


----- Original Message -----
From: "Shel Belinkoff"
Subject: Re: Possibility of Medium Format enablement


And how does that effect to focus, my good may - after all, the camera position has moved and with the mirror up you can't see to adjust focus.
Am I missing something?

The trick is to not move.
And to have exposure and focus set.
It's quite doable, though it's not something I would expect to have much
success with if I was using a normal lens or longer.
Lots of people shoot from the hip, where they have preset focus and
exposure, and depend on their feel for the situation to know what the
camera
is pointing at.

William Robb




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