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This transparent screen offers the photographer focusing with
an unusually bright finder image. Ideal for macrophotography
of 1:1 or over, and for photomicrography.
To focus, first correct your diopter using a dioptric correction
lens or Varimagni Finder so that each line of the double cross
hairs can be seen clearly and separately. Then bring the specimen
into focus.
The meter needle gives correct light readings, but depending
on the condition of the specimen, the reading must be compensated
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product.