PCACala@xxxxxxx wrote:
>
> Chip writes:
>
> > By placing the point of fixation a distance from the center of gravity
> > (balance point), you increase the 'polar moment of inertia' of the
> > lens/camera combination.
> >
> > When you increase the polar moment of inertia, you will lower the resonant
> > frequency of the lens/camera system on the tripod mount, and hopefully
> > reduce the transmission of the higher frequency vibrations of a
> > mirror/shutter/aperture firing to image degrading lens movement.
>
> Thanks Chip. Let it be known that I had no idea why. George Anderson told
> me to do it. :-)
Mother Olympus recommends it too in the literature with the super
telephotos. They did the Moment of Inertia calcs, not me :>)
George
Just one of those things we never would have known if it
> wasn't for this community.
>
> Gary Reese
> Las Vegas, NV
>
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|