This topic came up a while back, with some discussion about whether the
charts concerning the markings on the dioptric lenses are correct. My
right eye distance prescription is -1 Diopter. Managed to find a -3
dioptric correction lens for the Eyecup 1 at a very good price. Tried it
and it works just fine for my right eye. Ordered a "-3" Eyecup 2 and it's
just the same. At least my anecdotal experience now is that the markings
are indeed what the SIF states: the actual correction lens is its marking +2.
That leads to a question, as there is a -2 Diopter lens available also. If
the math is correct, this would be 0 Diopter correction, or simply a flat
piece of glass. Is that true? My next visit to the optometrist will have
her test the bigger Eyecup 1 lens to see what it really is.
BTW, put the Eyecup 1 correction lens on my Mamiya M645 and it works there
too! My how things focus much easier with the correction and I don't need
to squint into a viewfinder from a distance through eyeglasses!
-- John
< 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 >
|