The original Olympus OM-2 Instruction book says (on the Main
Specifications page), "Measuring Range: ASA 100 F1.2 from several tens
of seconds to F16, 1/1,000 second." And in the section titled Automatic
Exposure Control, "Since your OM-2 provides for automatic exposures from
1 second to approximately 60 seconds (with ASA 100), make sure your
camera is on a tripod or other stable support."
I can't find my OM-2n Instruction book, but I believe the "guaranteed"
exposure range was doubled to two minutes under similar conditons.
In use, however, an OM-2 or OM-2n _may_ keep the shutter open much
longer than one or two minutes. But both models have a tiny LED peeking
into one of the Silicon Blue Cells to assure that, even in "total"
darkness, the shutter will eventually close. The P-circuit of the OM-2n
will also cut power after approximately three minutes, anyway.
DaEyeGuy@xxxxxxx wrote:
>
> In a message dated 10/13/00 7:27:56 AM Eastern Daylight Time,
> charlie@xxxxxxxxxxxxx writes:
>
> << Why not a 2n? >>
> the improved circuitry of the 2n includes a default cutoff for the shutter
> speed, while the original keeps on going up to (how long guys? 16 secs??)
> Hence, great for astro photog. or creative long shots.
> Susan
>
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