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Re: [OM] Screens 1-4 and 1-4N

Subject: Re: [OM] Screens 1-4 and 1-4N
From: rdk@xxxxxxxxx
Date: Sat, 24 Mar 2001 00:17:01 +0100


Note: I was actually quoting from Hans' Unofficial Olympus OM Sales Information
File

http://members.nbci.com/_XMCM/veluwen/om-sif/findergroup/focusingscreens.htm

mvh / regards
Roger Key




:Roger Key wrote:

>The smaller central circle in the 4n demarcates the spot metering area for
>OM-2S, OM3 (Ti), and OM-4 (Ti).

:The microprism collar of the 1-13 is near enough the 20f the spotmetered
:models. Is the 1-4n the same size? It doesn't appear in Shipman's 1989 book.

>The larger circle of the 1-4 marks the center-weighted of the OM-1 and OM-2.

:I didn't think the centre-weighting was that precisely marked. In fact, the
:term suggests it is weighted (or biased) toward central subjects, not that
:it is metered only from that area. I also recall reading that Olympus'
:centre-weighted metering wasn't half as weighted as other makes. My own and
:others' experience of underexposure in auto mode when there is sky in the
:frame backs this up.

:The pattern on the first curtain of late OM2 and subsequent TTL-auto models
is not strongly weighted, though the original OM2 pattern was more so (I
:believe R. Lee Hawkins' website has a link to jpegs of the two curtain
:patterns).

:Simon E.





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