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[OM] Off Topic: Viewfinder spec definitions

Subject: [OM] Off Topic: Viewfinder spec definitions
From: "Sean Chan" <sean_chan@xxxxxxxxxxx>
Date: Mon, 25 Jan 1999 14:09:21 WST
Gidday Oly users,

Probably the wrong place to ask this question but I find you guys
and gals a lot more friendly than the newsgroup or EOS mailing
list (you should see the kind of arguments going on there).

Anyway, back to my viewfinder question. My OM-4Ti specs state 97%
0.86x, whilst my EOS-3 states 
9700000000000000000000000000000000000000000000000000000000000000000000000000 
(or some smaller mag).
Looking through the viewfinders of both with a 135mm lens, the
subject in the OM-4Ti looks a lot bigger/closer than the EOS-3.
Presumably due to the magnification issue. What does 97% mean
then?? 970f what I see in the viewfinder??

But that doesn't make sense 'cos if (hypothetically speaking)
both the OM-4Ti and EOS-3 had a 100% viewfinder and both had
the same focal length lens, and the only difference is the
0.74X vs. 0.86X magnification, the image on the neg of the
EOS-3 would cover more viewing area than the OM-4Ti!! Wouldn't
one expect that a 135mm focal length lens would give the same
coverage on the negative regardless of body and viewfinder
(afterall, when the subject is imaged onto the negative, the
viewfinder plays no part during the exposure process).

Confused, & not thinking,
Sean
--
Sean H.Y. Chan                   sean@xxxxxxxxxx
IT Consultant        http://www.tsm.com.au/~sean
DSM Group Pty. Ltd.          +61 412 246-889 (M)
PO Box 1493, West Perth, 6872, WESTERN AUSTRALIA


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