I presume the floating element is only changed with focus and not aperture.
I mounted my 85/2 (s/n 2055xx, black nose, MC, so I presume 5/4 version) on
my E-P1 and took a series of shots between f2 and f16 and couldn't see any
obvious difference apart from the change in DOF.
>
> On 1/27/2013 8:03 PM, Chuck Norcutt wrote:
> > Here's the Olympus schematic for the 85/2.
> > <http://olympus.dementix.org/eSIF/om-sif/lensgroup/85mmf2.htm>
> > I sure don't see any coma inducing mechanism here.
> > Can't seem to find one in the parts list either
> > <http://olympus.dementix.org/Hardware/PDFs/85mm_f2.0.pdf>
> > :-)
>
> I believe he is probably referring to the floating group/element. eSIF
say, "It
> incorporates a floating element group for the first time in the world for
a
> telephoto, ensuring superior image quality even at close distances."
>
> Also, we don't know which version he has. The 85/2 had the biggest
redesign
> I know of for a production OM Zuiko, going from 6 elements in 4 groups to
5-
> 4.
>
> Perhaps the effect he comments on was a thing corrected.
>
> Coma Tose Moose
>
> --
> What if the Hokey Pokey *IS* what it's all about?
> --
> __________________________________________________________
> _______
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|