>From the esif (http://olympus.dementia.org/eSIF/):
The main difference between these two bodies is the System Flash support.
The OM-2 supports TTL/OTF flash control with both the Quick Auto 310 flash
(with Accessory Shoe 2) and the T series flashes (with Accessory Shoe 3).
The OM-2n supports TTL/OTF flash control only with the T series flashes and
only accepts Accessory Shoe 4. The OM-2n adds a flash ready / flash ok LED
and an exposure compensation flag in the viewfinder, and automatic flash
synchro speed setting. The longest guaranteed reproducable exposure time on
the OM-2n is 2 minutes, independent on ASA speed, while the OM-2 has a long
exposure limit that varies with ASA speed (1 minute with 100 ASA). The OM-2n
automatically sets the shutter speed at 1/60 sec with a T flash. The OM-2
however will keep the shutter open when the flash does not give enough
output, using available light OTF as an addition to the light produced by
the flash. Some people think this is an advantage, but it is not without
reason Olympus changed this in the OM-2n: the electromagnetic shutter will
quickly drain the battery when it stays open for extended periods.
Rich
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