In a message dated 5/4/01 7:52:16 PM Eastern Daylight Time,
pcacala@xxxxxxxxxxxxx writes:
> Greg L. asked me awhile back to look at the color fringing of the Tamron
> SP 80-200mm f/2.8. Well, I looked at a few lenses:
> 250mm f/2 Zuiko: none (as expected from an apochromatically corrected
> lens)
> 80-200mm f/2.8 Tamron: in roughly equal amount to the following:
> 300mm f/4.5 Zuiko MC
> 180mm f/2.8 Zuiko MC
> 400mm f/4 Tamron
>
> I've tested three 180mm f/2.8 Zuikos and they all color fringe.
>
> I have no way of quantifying this spherical aberration I'm seeing, so I
> don't expect to do anything more on this.
>
> Gary Reese
> Las Vegas, NV
>
Gary,
Very interesting results. I would not have expected the 400 Tamron to
exhibit much color fringing.
As always, thanks for your efforts and the extremely valuable information you
provide to the community here.
Best,
Greg L.
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