"So if you use your OM-4Ti in auto mode with the F280 in FP mode will you get
correct exposure controlled by the OM-4Ti setting the appropriate shutter speed
(within the constraints imposed by the intensity of the F280)?"
There are no constraints imposed by the F280. You get the appropriate shutter
speed for the ambient light, whether or not the F280 fires.
The camera doesn't alter its behavior in any way just because the F280 is
attached and working in Super FP. The photocell in the camera reads the light
hitting the film, then releases the second shutter curtain when "correct"
exposure has been obtained, just as it does for normal auto-exposure operation.
The output of the F280 in Super FP mode has apparently been designed to give
more or less "normal" fill-in at common shooting distances. This means the
light from the flash will have only a slight effect on the total exposure.
When you're very close to the subject, the flash's output overwhelms the
ambient light, and because it's "continuous," you'd expect the cameras
photocell to correctly read it. But you'd probably be better off using the
flash in normal TTL mode (though this would require dropping the shutter speed
to 1/60).
You know, I hadn't thought about this before. Could Super FP be used for flash
auto-exposure closeups? Very interesting...
The description given by Babis Mavridis is basically correct -- Super FP for
fill-in, manual operation for maximum flash output.
"Thanks, that helped explain a few things. Now I'm going out this weekend and
shoot a practice roll."
You're welcome. Please let us know what you learn.
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