I agree. I tried moving my eye all around, and only
saw one side or the other go dark, but no shift in the
indication of the best focus point. I am talking
about the split image focus indication, not the
microprism. The microprism does not seem to work well
with the f ratio of this lens.
--- Joel Wilcox <jdubikins@xxxxxxxxxxx> wrote:
> >From: Gary Reese <pcacala@xxxxxxxxxxxxx>
> >The matte surface is more accurate. The biprism
> gives the illusion of
> >greater precision, which isn't the same thing as
> accuracy. (As society
> >hopefully learned in the Florida ballot counts).
> With the biprism,
> >viewing angle of your eye can shift the image.
>
> Hold it. The viewing angle can cause incorrect focus
> with the biprism? I
> notice one side can darken depending on viewing
> angle but have never noticed
> shifting. Gary, you're going to have everybody
> trading in their 1-13 and
> 2-13 screens for 1-4 and 2-4's. <G> Is there more
> to tell about this? I
> assume geological survey maps have something to do
> with this discovery?
>
> Joel W.
>
>
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