At 03:01 AM 6/23/01 +0200, Henrik Dahl wrote:
Thanks Mark.
So is it worth the extra $50-70 to get a F280 after all?
There's a trade-off. The F280 dumps its entire charge by a series of
extremely short flashes which are pulsed quite close in time, so that, even
if you're using (say) 1/1000th of a second shutter speed, it'll still
illuminate your scene. The problem is that, since you'll only catch one or
two of the many pulses at the high shutter speed, the effective Guide
Number of the F280 drops off dramatically as shutter speed increases. But
it's the only OM-designed flash that does a reasonable job of fill-flash
without the photographer having to go through mental contortions to
calculate the fill ratio and then manually dither with the flash output,
F-stop, etc.
Garth
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