This has been covered in the past a couple of times. One of the
modifications on the new model OM2n was to add the time limiting led.
The original OM2 did not have a limiter led and consequently allowed
much longer auto exposure. It was for this reason that when presented
with the choice of keeping the OM2 or the OM2n, I opted for the OM2.
~~~~~~~~~~~~~~~~~~~~~~~~~~~
clintonr@xxxxxxxxxxxxxxxx wrote:
>
> 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.
>
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