Archived posting to the Leica Users Group, 1997/10/13
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On 12 Oct 97, Jim Brick wrote:
<snip>
N.B. what Jim says below, Gary. This is gospel!
> Next, I don't care which camera you have, a mirror hitting the top
> during an exposure, WILL cause vibration. Vibration on different
> cameras will occur at different times. My R3's and R4's were murder at
> 1/15 - 1/4. It depends where the shutter is in relation to the mirror
> at any given moment. At longer exposures (1/2 & greater) there's
> enough exposure around the vibration to not be noticeable. I had to
> move to an R6 with mirror lock-up (MLU) to eliminate the problem. I
> shoot a lot of Velvia + polarizer and sometimes an extender. This
> equals 1/2, 1/4, 1/8, 1/15 sec exposures most of the time, if you want
> any depth of field. I simply CANNOT shoot long lenses successfully
> without taking care of EACH and EVERY DETAIL. The two major helpers
> are a weighted center post and MLU.
Great discourse on steadiness and how it is achieved, Jim. MLU is
impossible to do without if you're going to cover all the bases in
macro and/or long lens work.
- --
Roger Beamon
Naturalist & Photographer
Leica Historical Society Of America
mailto:beamon@primenet.com
Thought for the day:
As always, avoid alliteration.