Olympus OM System OM-1 - Other external flash units

300 EN
Information
10
 Wireless Flash Control Range
The illustration is intended as a guide only. The ash control range varies with the type
of ash mounted on the camera and the conditions in the surrounding area.
Flash Control Range for Camera-Mounted FL-LM3 Flash Units
7m
5m
100°100°
50°
50°
50°
50°
60°
60°
30°
30°
30°
30°
• We recommend that each group contain no more than 3 ash units.
• Wireless ash photography is not available in anti-shock mode or in rear-curtain slow sync
mode when a shutter speed slower than 4 s is selected.
• Start wait times longer than 4 s cannot be selected in anti-shock and silent modes.
• Flash control signals may interfere with exposure if subject is too close to the camera.
This can be mitigated by reducing the brightness of the camera ash, for example by
using a di󰀨user.
Other external ash units
Third-party ash units can be mounted on the hot shoe or connected via a sync cable.
Be sure to replace the cap on the external ash connector when it is not in use. Note
the following when using a third-party ash unit mounted on the camera hot shoe:
• Using obsolete ash units that apply currents of more than about 250 V to the X-contact
will damage the camera.
• Connecting ash units with signal contacts that do not conform to our specications may
damage the camera.
• Select mode M, choose a shutter speed no faster than the ash sync speed, and set
[KISO] to a setting other than [Auto].
• Flash control can only be performed by manually setting the ash to the ISO sensitivity
and aperture values selected with the camera. Flash brightness can be adjusted by
adjusting either ISO sensitivity or aperture.
• Use a ash with an angle of illumination suited to the lens. Angle of illumination is usually
expressed using 35-mm format equivalent focal lengths.