John,
I've had OMs not fire the flash because the speed was too close to the max
synch speed of 1/60. Lighting can change and push the level over 1/60 ever
so slightly and cause the flash to remain dark. The metered display could be
out of synch with the flash synch device. Before my OM-2 was CLAd the flash
would not fire if the meter was pointing midway between 30 and 60. After CLA
it would fire right up to 60. It doesn't sound like an F280 problem unless
it won't fire at slower shutter speeds or on manual at 1/30. Do other flash
units fire at speeds slower than the 1/60 mark?
Mickey
----- Original Message -----
From: "John Hudson" <jahudson@xxxxxxx>
To: "LIST - Olympus" <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, August 18, 2002 8:47 AM
Subject: [OM] F280 flash fails to fire
>
> Using an OM4T with a 90/f2 and a 50/f1.2 my camera mounted F280 failed
> to fire on several occasions where there was bright backlighting but the
> subject matter was in dark shade ...... people standing in a poorly lit
> room against opened doors leading to a brightly sun lit exterior. The
> distance from flash to subject was circa 12 feet. I had the flash set to
> "normal" [because the shutter speed recorded less than 1/60 second], the
> aperture set to ~f5.6, and the camera set to auto and I was using 160
> ISO Portra. The subjects were framed within the centre of the
> viewfinder. Can anyone suggest why the F280 failed to fire. It was
> properly fitted into the shoe on the camera, I was using new batteries,
> and the charge light was lit up.
>
> On all occasions when there was less intense back lighting the F280
> fired but then I was using Super FP mode.
>
> John Hudson
> Vancouver, BC
>
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