Thanks, both of you.
That's certainly sufficient information for my interest in the
debate. ;-)
G
On Jan 22, 2009, at 11:41 AM, William Robb wrote:
----- Original Message ----- From: "Mark Roberts"
Subject: Re: Pentax 6x7 video ...
Michael Reichmann did some actual tests of 67 shutter vibration and
showed the resulting photographs (yes, I know that looking at
actual results, rather than endlessly arguing theory, is out of
vogue):
http://www.luminous-landscape.com/reviews/cameras/pentax67ii.shtml
Note that Reichmann's results are with a long lens (300mm with 1.4x
TC: 420mm, or roughly equivalent to 210mm on a 35mm camera) and
that he merely states that one needs only use an adequate tripod to
completely eliminate the effect.
I was wondering if I should include that link or not. The tripod he
used was way undersized for the camera lens combination, which was
probably pushing 12 pounds. The only time I've experienced picture
ruining vibration with the 6x7 was when using an undersized tripod
(Manfrotto 055) and a shutter speed that caused the tripod to ring
from secondary harmonics (is that the right term?).
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