Olympus Live BULB mode
see also:
the Olympus OM-D system and how to make the most of it
long exposure modes in Olympus cameras
http://www.lessgearmorephotos.com/how-to-use-live-bulb-on-olympus-om-d-cameras-for-long-exposure-photography/
introduction
another long exposure mode pioneered by Olympus in their
Micro Four Thirds system
essentially allows one to press the shutter release and HOLD it pressed to start the exposure then WATCH the image build up on the LCD screen, then when you think it has had enough exposure, you simply release the shutter release
note:
Olympus Live Composite mode
may be even more useful for you!
usage
in the Menu, set:
Cogs E. Exp/ISO: BULB/TIME Timer to your maximum desired exposure duration (1-30 minutes)
Cogs E. Exp/ISO: Live BULB to the live view refresh interval (0.5-60sec)
NB. max. number of refresh displays are dependent upon ISO (9 for ISO 1600 to 24 for ISO 100)
set IS to OFF (assuming you are using a tripod)
select Manual exposure mode on the PASM dial
select ISO and aperture
set shutter to Live BULB
press the shutter release and HOLD it pressed to start the exposure
watch the screen
release the shutter release to end the exposure