Shawn Wright wrote:
>The speeds I referred to are the 1/25 to 1/50th, as stated by the original
>author. My point was that at these speeds, why bother with the F280? It offers
>*no* benefit over a T series flash when used in the TTL shutter speed range
>below 1/60. As you correctly state, the F280 is designed for daylight fill,
>which usually means above 1/60 second for wide aperture portraits, etc. While
>the fully automated results in such cases may be excellent, there seems to be
>little provision for *easily* adjusting flash fill ratios, with either TTL or
>FP flash.
Actually the OM-4T does not control the F280 flash in the Super FP mode below
1/60 in the auto mode. Below 1/60 sec,
you need to operate manually to synchronize the F280 super FP flashes.
I've used a wide adapter as a diffuser for the F280 on my OM2000 and the OM-4T.
It looks like I have sufficiently reduced the flash output under this condition
and made the F280 act as a fill flash.
On the 2000, I just underexposed by one stop or so, and it worked out. I have
not finished the roll in the 4T yet.
>Yes, these are excellent examples. I'll be interested in your test results. If
>they work out, does this mean one could take a spot reading on the background
>with a 4T, then set the manual shutter speed for 2 stops under, then use the
>F280 to properly expose the the foreground? This is the sort of thing I would
>like to have, but I thought someone said that the F280 goes to full power when
>used with the 4-T in manual mode? (much like the T-20 does if left in TTL
>mode).
In the test I have already done in the manual mode, I recall the difference
between the background and the foreground
was about two stops. I set the shutter speed for the bright background and
used the wide adapter on the F280 and shot a
few tests. I'd better finish the roll tomorrow so that I have some idea how my
setup works out. We had a thunderstorm
tonight which I hope will bring the temperature down and remove the humidity to
work outside tomorrow. Besides the
early-morning walk I stayed inside all day today to avoid the heat.
Tomoko Yamamoto
mailto:tomokoy@xxxxxxxxx
http://www.charm.net/~tomokoy/
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