Hi Zuiks,
I was reading through Dean Hansen's post about the Zuiko 20mm macro and
the problems he is experiencing, trying to get sharp shots with it. And he
has gone to some lengths to avoid the negative effects of camera/lens
vibration.
I've come to the conclusion that with at least two of my lenses, the 100/2
and the 300/4.5, vibration can be a major (read MAJOR) spoiler of image
quality. And it's not all that easy to decide where the offending vibration
comes from; then dealing with it..
I've come to the conclusion that I agree with the writings of my old (now
deceased) Forest Service photographer friend John Johns (see his book
"Know your Camera") that it is important to have the camera/lens
combination as close as possible to the apex of the tripod, and if that means
doing away with such devices as tripod heads, close-focussing stages and
racks, then so be it. You may have to decide between your convenience and
comfort on the one hand, and image quality on the other.
In his "Olympus OM system lens tests" Gary Reese repeatedly reports the
benefits of taking several defined actions to avert vibration and consequent
loss of image contrast and definition.
I wonder if Gary can tell us how OM cameras / systems compare in this
regard with other makes?
How lens shutters compare with focal plane shutters.
How OM cloth shutter systems compare with vertical-run metal shutters.
And other heretical ideas.
Brian
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