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Re: [OM] F280 ModPhoto

Subject: Re: [OM] F280 ModPhoto
From: "Terry and Tracey" <foxcroft@xxxxxxxxxxx>
Date: Wed, 1 May 2002 22:24:39 +1000
Are you sure about this? Flashbulbs work (apparently) the way as described
in the original email. And the F280 is just a low powered electronic bulb in
this mode.

Foxy

----- Original Message -----
> "...In Super FP mode you can use any shutter speed above 1/60 sec.
> and be assured of full flash coverage. (If you could use Super FP
> flash at speeds slower than 1/60 sec. it would flash for only part of
> the time the shutter was open, leading to possible under exposure.
> The camera does not allow this and signals "under" if you attempt
> it)..."
>
> "...Only at closer distances and lower shutter speeds, 1/60 to 1/125
> sec. do you get enough light to expose a subject by flash alone in
> Super FP mode.

Shutter speed doesn't matter, just flash to subject distance and ambient
light.

> "...Although illumination provided by the F280 flash is constant in
> FP mode, the amount of fill can be controlled relative to ambient
> light by selecting higher or lower shutter speeds.

Wrong. The fill ratio is controlled only by flash to subject distance.

> This is accomplished by changing the lens aperture in automatic
> mode.  If you set a lower shutter speed, the amount of fill-in
> flash will be greater.  Moving above 1/250 sec. will darken the
> shadows(as well as freezing the action and minimizing depth of
> field).  Although background exposure will remain correct, there
> is no automatic way to determine what would be the proper
> fill-to-ambient-light ratio for each subject. Often this is a
> matter of taste or personal preference. Although  there are no
> hard and fast rules for obtaining optimal balance, with a little
> experimenting you should quickly get a feel for it."

Wrong. The fill ratio is controlled only by flash to subject distance.





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